diff --git a/public/games/age-of-dwarves/data/schemas/building.schema.json b/public/games/age-of-dwarves/data/schemas/building.schema.json
index ac006ccc..9cc11e51 100644
--- a/public/games/age-of-dwarves/data/schemas/building.schema.json
+++ b/public/games/age-of-dwarves/data/schemas/building.schema.json
@@ -42,6 +42,24 @@
     "upgrade_fee":       { "type": ["number", "null"], "minimum": 0 },
     "stack_mode":        { "type": "string", "enum": ["parallel", "amplify", "single"] },
     "produces":          { "type": "array", "items": { "type": "string" } },
+    "merge_requires":    {
+      "type": "array",
+      "items": { "type": "string" },
+      "minItems": 2,
+      "maxItems": 2,
+      "description": "IDs of two co-located prerequisite buildings that must be merged to produce this hybrid structure (p1-59)."
+    },
+    "exclusive_units":   {
+      "type": "array",
+      "items": { "type": "string" },
+      "description": "Unit IDs that can ONLY be produced by this hybrid (not by either prerequisite alone)."
+    },
+    "irreversible":      { "type": "boolean", "description": "If true, building cannot be unmerged; demolish to reset." },
+    "merged_grandmaster_cap": { "type": ["integer", "null"], "minimum": 0 },
+    "requires_building": { "type": ["string", "null"] },
+    "can_rally":         { "type": "boolean" },
+    "keywords":          { "type": "array", "items": { "type": "string" } },
+    "adjacency":         { "type": "array" },
     "sprite":           { "type": "string" },
     "flavor":           { "type": "string" },
     "flags":            { "type": "array", "items": { "type": "string" } },
diff --git a/public/resources/buildings/assault_citadel.json b/public/resources/buildings/assault_citadel.json
new file mode 100644
index 00000000..d811c8ef
--- /dev/null
+++ b/public/resources/buildings/assault_citadel.json
@@ -0,0 +1,51 @@
+{
+  "id": "assault_citadel",
+  "name": "Assault Citadel",
+  "description": "A hybrid stronghold merging the sword hall with the siege annex. Heavy melee shock troops train alongside breaching engineers under a single command roof.",
+  "placement": "city",
+  "category": "military",
+  "school": null,
+  "cost": 320,
+  "upkeep": 5,
+  "tech_required": "military_synthesis",
+  "race_required": "dwarf",
+  "wonder_type": null,
+  "mana_generated": null,
+  "tier": 7,
+  "can_rally": true,
+  "merge_requires": ["sword_hall", "siege_annex"],
+  "exclusive_units": ["siege_breaker", "combat_engineer", "storm_trooper"],
+  "irreversible": true,
+  "effects": [
+    {
+      "type": "production",
+      "value": 4
+    },
+    {
+      "type": "free_xp",
+      "value": 30,
+      "scope": "melee"
+    },
+    {
+      "type": "free_xp",
+      "value": 30,
+      "scope": "siege"
+    }
+  ],
+  "sprite": "sprites/buildings/assault_citadel.png",
+  "encyclopedia": {
+    "category": "civilization",
+    "entry_type": "building",
+    "detail_route": "/buildings/buildings",
+    "tags": [
+      "military",
+      "hybrid",
+      "melee",
+      "siege",
+      "dwarven"
+    ]
+  },
+  "produces": ["siege_breaker", "combat_engineer", "storm_trooper"],
+  "stack_mode": "single",
+  "flavor": "The shield wall and the breaching ram now share a sergeant."
+}
diff --git a/public/resources/buildings/barding_hall.json b/public/resources/buildings/barding_hall.json
new file mode 100644
index 00000000..f6612d94
--- /dev/null
+++ b/public/resources/buildings/barding_hall.json
@@ -0,0 +1,51 @@
+{
+  "id": "barding_hall",
+  "name": "Barding Hall",
+  "description": "Smithies and harness-rooms dedicated to armoring war boars and rams alongside their riders. The barding is fitted while the beast is still annoyed.",
+  "placement": "city",
+  "category": "military",
+  "school": null,
+  "cost": 110,
+  "upkeep": 2,
+  "tech_required": "hardened_plate",
+  "race_required": "dwarf",
+  "wonder_type": null,
+  "mana_generated": null,
+  "tier": 4,
+  "can_rally": true,
+  "effects": [
+    {
+      "type": "production",
+      "value": 2
+    },
+    {
+      "type": "unit_defense_bonus",
+      "value": 2,
+      "scope": "cavalry"
+    },
+    {
+      "type": "free_xp",
+      "value": 20,
+      "scope": "cavalry"
+    }
+  ],
+  "requires_building": "stable",
+  "sprite": "sprites/buildings/barding_hall.png",
+  "encyclopedia": {
+    "category": "civilization",
+    "entry_type": "building",
+    "detail_route": "/buildings/buildings",
+    "tags": [
+      "military",
+      "cavalry",
+      "dwarven"
+    ]
+  },
+  "produces": [
+    "tusker_knight",
+    "mounted_archer",
+    "beast_scout"
+  ],
+  "stack_mode": "parallel",
+  "flavor": "The boar is angrier in armor. Take that as confirmation."
+}
diff --git a/public/resources/buildings/cavalry_corps.json b/public/resources/buildings/cavalry_corps.json
new file mode 100644
index 00000000..495ddb7f
--- /dev/null
+++ b/public/resources/buildings/cavalry_corps.json
@@ -0,0 +1,51 @@
+{
+  "id": "cavalry_corps",
+  "name": "Cavalry Corps",
+  "description": "A hybrid command merging the barding hall with the bolt range. Mounted skirmishers and ranged scouts train as a single doctrine.",
+  "placement": "city",
+  "category": "military",
+  "school": null,
+  "cost": 320,
+  "upkeep": 5,
+  "tech_required": "military_synthesis",
+  "race_required": "dwarf",
+  "wonder_type": null,
+  "mana_generated": null,
+  "tier": 7,
+  "can_rally": true,
+  "merge_requires": ["barding_hall", "bolt_range"],
+  "exclusive_units": ["mounted_archer", "beast_scout", "ram_sniper"],
+  "irreversible": true,
+  "effects": [
+    {
+      "type": "production",
+      "value": 4
+    },
+    {
+      "type": "free_xp",
+      "value": 30,
+      "scope": "cavalry"
+    },
+    {
+      "type": "free_xp",
+      "value": 25,
+      "scope": "ranged"
+    }
+  ],
+  "sprite": "sprites/buildings/cavalry_corps.png",
+  "encyclopedia": {
+    "category": "civilization",
+    "entry_type": "building",
+    "detail_route": "/buildings/buildings",
+    "tags": [
+      "military",
+      "hybrid",
+      "cavalry",
+      "ranged",
+      "dwarven"
+    ]
+  },
+  "produces": ["mounted_archer", "beast_scout", "ram_sniper"],
+  "stack_mode": "single",
+  "flavor": "The bolt has the range. The boar has the speed. They now arrive together."
+}
diff --git a/public/resources/buildings/gunnery_corps.json b/public/resources/buildings/gunnery_corps.json
new file mode 100644
index 00000000..f576939a
--- /dev/null
+++ b/public/resources/buildings/gunnery_corps.json
@@ -0,0 +1,52 @@
+{
+  "id": "gunnery_corps",
+  "name": "Gunnery Corps",
+  "description": "A hybrid stronghold merging the rifle range with the powder annex. Combined gunpowder doctrine: mortars, gunners, and the artillery park share one parade ground.",
+  "placement": "city",
+  "category": "military",
+  "school": null,
+  "cost": 340,
+  "upkeep": 6,
+  "tech_required": "military_synthesis",
+  "race_required": "dwarf",
+  "wonder_type": null,
+  "mana_generated": null,
+  "tier": 7,
+  "can_rally": true,
+  "merge_requires": ["rifle_range", "powder_annex"],
+  "exclusive_units": ["mortar_team", "assault_gunner", "field_artillery"],
+  "irreversible": true,
+  "effects": [
+    {
+      "type": "production",
+      "value": 4
+    },
+    {
+      "type": "free_xp",
+      "value": 30,
+      "scope": "ranged"
+    },
+    {
+      "type": "free_xp",
+      "value": 30,
+      "scope": "siege"
+    }
+  ],
+  "sprite": "sprites/buildings/gunnery_corps.png",
+  "encyclopedia": {
+    "category": "civilization",
+    "entry_type": "building",
+    "detail_route": "/buildings/buildings",
+    "tags": [
+      "military",
+      "hybrid",
+      "ranged",
+      "siege",
+      "industrial",
+      "dwarven"
+    ]
+  },
+  "produces": ["mortar_team", "assault_gunner", "field_artillery"],
+  "stack_mode": "single",
+  "flavor": "The rifle decides the line. The mortar decides the angle. The gun decides the weight."
+}
diff --git a/public/resources/buildings/powder_annex.json b/public/resources/buildings/powder_annex.json
new file mode 100644
index 00000000..8cd93998
--- /dev/null
+++ b/public/resources/buildings/powder_annex.json
@@ -0,0 +1,46 @@
+{
+  "id": "powder_annex",
+  "name": "Powder Annex",
+  "description": "An extension to the rifle range and powder works combining mortar pits, magazine vaults, and dedicated mortar-team training. The smell of sulphur is constant; the dwarves stop noticing.",
+  "placement": "city",
+  "category": "military",
+  "school": null,
+  "cost": 150,
+  "upkeep": 3,
+  "tech_required": "mechanized_warfare",
+  "race_required": "dwarf",
+  "wonder_type": null,
+  "mana_generated": null,
+  "tier": 6,
+  "can_rally": true,
+  "effects": [
+    {
+      "type": "production",
+      "value": 3
+    },
+    {
+      "type": "free_xp",
+      "value": 25,
+      "scope": "ranged"
+    }
+  ],
+  "requires_building": "powder_works",
+  "sprite": "sprites/buildings/powder_annex.png",
+  "encyclopedia": {
+    "category": "civilization",
+    "entry_type": "building",
+    "detail_route": "/buildings/buildings",
+    "tags": [
+      "military",
+      "ranged",
+      "industrial",
+      "dwarven"
+    ]
+  },
+  "produces": [
+    "mortar_team",
+    "mounted_rifleman"
+  ],
+  "stack_mode": "parallel",
+  "flavor": "The mortar arcs the shot the rifle cannot."
+}
diff --git a/public/resources/buildings/siege_annex.json b/public/resources/buildings/siege_annex.json
new file mode 100644
index 00000000..f7387b04
--- /dev/null
+++ b/public/resources/buildings/siege_annex.json
@@ -0,0 +1,49 @@
+{
+  "id": "siege_annex",
+  "name": "Siege Annex",
+  "description": "An expanded wing attached to the siege workshop housing assault engineers, sapper crews, and the heavy ordnance that does not fit in the main hall.",
+  "placement": "city",
+  "category": "military",
+  "school": null,
+  "cost": 140,
+  "upkeep": 3,
+  "tech_required": "imperial_warfare",
+  "race_required": "dwarf",
+  "wonder_type": null,
+  "mana_generated": null,
+  "tier": 5,
+  "can_rally": true,
+  "effects": [
+    {
+      "type": "production",
+      "value": 2
+    },
+    {
+      "type": "siege_production_speed",
+      "value": 0.25
+    },
+    {
+      "type": "free_xp",
+      "value": 20,
+      "scope": "siege"
+    }
+  ],
+  "requires_building": "siege_workshop",
+  "sprite": "sprites/buildings/siege_annex.png",
+  "encyclopedia": {
+    "category": "civilization",
+    "entry_type": "building",
+    "detail_route": "/buildings/buildings",
+    "tags": [
+      "military",
+      "siege",
+      "dwarven"
+    ]
+  },
+  "produces": [
+    "combat_engineer",
+    "siege_breaker"
+  ],
+  "stack_mode": "parallel",
+  "flavor": "The annex was built to hold the bigger machines. The bigger machines arrived first."
+}
diff --git a/public/resources/buildings/war_academy.json b/public/resources/buildings/war_academy.json
new file mode 100644
index 00000000..161f6f6f
--- /dev/null
+++ b/public/resources/buildings/war_academy.json
@@ -0,0 +1,51 @@
+{
+  "id": "war_academy",
+  "name": "War Academy",
+  "description": "A unified hybrid structure merging the rifle range and the barding hall. Trains mixed cavalry-and-firearm doctrines that neither school can produce alone.",
+  "placement": "city",
+  "category": "military",
+  "school": null,
+  "cost": 320,
+  "upkeep": 5,
+  "tech_required": "military_synthesis",
+  "race_required": "dwarf",
+  "wonder_type": null,
+  "mana_generated": null,
+  "tier": 7,
+  "can_rally": true,
+  "merge_requires": ["rifle_range", "barding_hall"],
+  "exclusive_units": ["dragoon", "mounted_rifleman", "assault_cavalry"],
+  "irreversible": true,
+  "effects": [
+    {
+      "type": "production",
+      "value": 4
+    },
+    {
+      "type": "free_xp",
+      "value": 30,
+      "scope": "cavalry"
+    },
+    {
+      "type": "free_xp",
+      "value": 30,
+      "scope": "ranged"
+    }
+  ],
+  "sprite": "sprites/buildings/war_academy.png",
+  "encyclopedia": {
+    "category": "civilization",
+    "entry_type": "building",
+    "detail_route": "/buildings/buildings",
+    "tags": [
+      "military",
+      "hybrid",
+      "cavalry",
+      "ranged",
+      "dwarven"
+    ]
+  },
+  "produces": ["dragoon", "mounted_rifleman", "assault_cavalry"],
+  "stack_mode": "single",
+  "flavor": "Two halls became one when nobody could decide which doctrine had won the argument."
+}
diff --git a/public/resources/techs/military.json b/public/resources/techs/military.json
index 21909957..ca6b84c1 100644
--- a/public/resources/techs/military.json
+++ b/public/resources/techs/military.json
@@ -377,5 +377,54 @@
         "military"
       ]
     }
+  },
+  {
+    "id": "military_synthesis",
+    "name": "Military Synthesis",
+    "description": "Doctrine that fuses two co-located military structures into a single hybrid command. Unlocks the merge action and the four hybrid structures: War Academy, Assault Citadel, Cavalry Corps, Gunnery Corps.",
+    "pillar": "military",
+    "domain": "Military",
+    "era": 7,
+    "tier": 7,
+    "cost": 220,
+    "requires": [
+      "mechanized_warfare",
+      "imperial_warfare"
+    ],
+    "unlocks": {
+      "buildings": [
+        "war_academy",
+        "assault_citadel",
+        "cavalry_corps",
+        "gunnery_corps"
+      ],
+      "units": [
+        "dragoon",
+        "assault_cavalry",
+        "siege_breaker",
+        "assault_gunner",
+        "field_artillery"
+      ],
+      "improvements": [],
+      "mechanics": [
+        {
+          "key": "unlocks_merge",
+          "label": "Hybrid Building Merge",
+          "value": true
+        }
+      ]
+    },
+    "unlocks_merge": true,
+    "flavor": "Two halls become one when neither doctrine has won the argument. The roof goes up regardless.",
+    "encyclopedia": {
+      "category": "civilization",
+      "entry_type": "tech",
+      "detail_route": "/research/tech-tree",
+      "tags": [
+        "military",
+        "hybrid",
+        "synthesis"
+      ]
+    }
   }
 ]
diff --git a/public/resources/units/assault_cavalry.json b/public/resources/units/assault_cavalry.json
new file mode 100644
index 00000000..b9953011
--- /dev/null
+++ b/public/resources/units/assault_cavalry.json
@@ -0,0 +1,38 @@
+{
+  "id": "assault_cavalry",
+  "name": "Assault Cavalry",
+  "description": "Apex shock cavalry: armored tusker mounts, lance, breastplate, and an attached sapper charge for breaking fortified lines.",
+  "unit_type": "melee",
+  "school": null,
+  "domain": "land",
+  "keywords": ["charge", "shock", "hybrid"],
+  "attributes": ["heavy", "biological"],
+  "attack_type": "trample",
+  "hp": 200,
+  "attack": 34,
+  "defense": 24,
+  "ranged_attack": 0,
+  "range": 0,
+  "movement": 4,
+  "vision": 2,
+  "cost": 290,
+  "tier": 7,
+  "tech_required": "military_synthesis",
+  "upgradeable_from": "tusker_knight",
+  "requires_resource": "iron_ore",
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/assault_cavalry.png",
+  "maintenance": 9,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "trample", "cavalry", "shock", "hybrid", "era7", "dwarven"]
+  },
+  "flavor": "What arrives is no longer a charge. It is a structural decision.",
+  "archetype": "cavalry_walker",
+  "promotion_tree": "melee"
+}
diff --git a/public/resources/units/assault_gunner.json b/public/resources/units/assault_gunner.json
new file mode 100644
index 00000000..d62b6a27
--- /dev/null
+++ b/public/resources/units/assault_gunner.json
@@ -0,0 +1,38 @@
+{
+  "id": "assault_gunner",
+  "name": "Assault Gunner",
+  "description": "Hybrid heavy weapons dwarf carrying a crank-fed repeating gun. Suppresses lines and fortifications at short range.",
+  "unit_type": "ranged",
+  "school": null,
+  "domain": "land",
+  "keywords": ["gunpowder", "suppress", "hybrid"],
+  "attributes": ["heavy", "biological"],
+  "attack_type": "piercing",
+  "hp": 180,
+  "attack": 16,
+  "defense": 18,
+  "ranged_attack": 36,
+  "range": 2,
+  "movement": 2,
+  "vision": 2,
+  "cost": 280,
+  "tier": 7,
+  "tech_required": "military_synthesis",
+  "upgradeable_from": "rifleman",
+  "requires_resource": "iron_ore",
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/assault_gunner.png",
+  "maintenance": 8,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "piercing", "ranged", "gunpowder", "hybrid", "era7", "dwarven"]
+  },
+  "flavor": "The crank is the timing. The barrel is the rest.",
+  "archetype": "infantry",
+  "promotion_tree": "ranged"
+}
diff --git a/public/resources/units/beast_scout.json b/public/resources/units/beast_scout.json
new file mode 100644
index 00000000..aa450688
--- /dev/null
+++ b/public/resources/units/beast_scout.json
@@ -0,0 +1,38 @@
+{
+  "id": "beast_scout",
+  "name": "Beast Scout",
+  "description": "Lightly equipped recon dwarf riding a trained mountain boar. Vision-focused; runs from heavy contact.",
+  "unit_type": "melee",
+  "school": null,
+  "domain": "land",
+  "keywords": ["fast", "scout", "skirmish"],
+  "attributes": ["light", "biological"],
+  "attack_type": "blade",
+  "hp": 90,
+  "attack": 12,
+  "defense": 8,
+  "ranged_attack": 0,
+  "range": 0,
+  "movement": 5,
+  "vision": 4,
+  "cost": 110,
+  "tier": 4,
+  "tech_required": "hardened_plate",
+  "upgradeable_from": "boar_scout",
+  "requires_resource": null,
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/beast_scout.png",
+  "maintenance": 4,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "blade", "cavalry", "scout", "era4", "dwarven"]
+  },
+  "flavor": "The boar sees in the fog. The dwarf takes notes.",
+  "archetype": "cavalry_walker",
+  "promotion_tree": "melee"
+}
diff --git a/public/resources/units/combat_engineer.json b/public/resources/units/combat_engineer.json
new file mode 100644
index 00000000..d2792402
--- /dev/null
+++ b/public/resources/units/combat_engineer.json
@@ -0,0 +1,39 @@
+{
+  "id": "combat_engineer",
+  "name": "Combat Engineer",
+  "description": "Field-grade engineer trained to build fortifications under fire and demolish them under siege. Carries entrenching tools, breaching charges, and a service carbine.",
+  "unit_type": "support",
+  "school": null,
+  "domain": "land",
+  "keywords": ["engineer", "siege"],
+  "attributes": ["medium", "biological"],
+  "attack_type": "blade",
+  "hp": 130,
+  "attack": 14,
+  "defense": 14,
+  "ranged_attack": 14,
+  "range": 1,
+  "movement": 2,
+  "vision": 2,
+  "cost": 200,
+  "tier": 6,
+  "tech_required": "mechanized_warfare",
+  "upgradeable_from": "dwarf_sapper",
+  "requires_resource": null,
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/combat_engineer.png",
+  "can_build_improvements": true,
+  "maintenance": 5,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "support", "engineer", "siege", "era6", "dwarven"]
+  },
+  "flavor": "Builds it. Breaks it. Same shift.",
+  "archetype": "infantry",
+  "promotion_tree": "support"
+}
diff --git a/public/resources/units/dragoon.json b/public/resources/units/dragoon.json
new file mode 100644
index 00000000..bf69ca9d
--- /dev/null
+++ b/public/resources/units/dragoon.json
@@ -0,0 +1,38 @@
+{
+  "id": "dragoon",
+  "name": "Dragoon",
+  "description": "Hybrid mounted soldier: full plate, long pistol, and a heavy sabre. Equally lethal at point-blank and at the charge.",
+  "unit_type": "melee",
+  "school": null,
+  "domain": "land",
+  "keywords": ["charge", "gunpowder", "hybrid"],
+  "attributes": ["heavy", "biological"],
+  "attack_type": "trample",
+  "hp": 170,
+  "attack": 28,
+  "defense": 22,
+  "ranged_attack": 18,
+  "range": 1,
+  "movement": 4,
+  "vision": 2,
+  "cost": 260,
+  "tier": 7,
+  "tech_required": "military_synthesis",
+  "upgradeable_from": "tusker_knight",
+  "requires_resource": "iron_ore",
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/dragoon.png",
+  "maintenance": 8,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "trample", "cavalry", "gunpowder", "hybrid", "era7", "dwarven"]
+  },
+  "flavor": "The pistol opens the conversation. The sabre concludes it.",
+  "archetype": "cavalry_walker",
+  "promotion_tree": "melee"
+}
diff --git a/public/resources/units/field_artillery.json b/public/resources/units/field_artillery.json
new file mode 100644
index 00000000..730a4d63
--- /dev/null
+++ b/public/resources/units/field_artillery.json
@@ -0,0 +1,38 @@
+{
+  "id": "field_artillery",
+  "name": "Field Artillery",
+  "description": "Mobile gun-carriage crewed by trained dwarves. Heavy direct-fire shells, repositioned by tusker-team haulage between volleys.",
+  "unit_type": "siege",
+  "school": null,
+  "domain": "land",
+  "keywords": ["gunpowder", "siege", "hybrid"],
+  "attributes": ["heavy", "mechanical"],
+  "attack_type": "explosive",
+  "hp": 160,
+  "attack": 12,
+  "defense": 12,
+  "ranged_attack": 42,
+  "range": 3,
+  "movement": 3,
+  "vision": 2,
+  "cost": 320,
+  "tier": 7,
+  "tech_required": "military_synthesis",
+  "upgradeable_from": "cannon_crew",
+  "requires_resource": "iron_ore",
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/field_artillery.png",
+  "maintenance": 9,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "explosive", "siege", "ranged", "gunpowder", "hybrid", "era7", "dwarven"]
+  },
+  "flavor": "The carriage moves between volleys. The volley is what arrives first.",
+  "archetype": "siege",
+  "promotion_tree": "ranged"
+}
diff --git a/public/resources/units/mortar_team.json b/public/resources/units/mortar_team.json
new file mode 100644
index 00000000..a88d0fc9
--- /dev/null
+++ b/public/resources/units/mortar_team.json
@@ -0,0 +1,38 @@
+{
+  "id": "mortar_team",
+  "name": "Mortar Team",
+  "description": "Two-dwarf crew with a portable mortar tube. Lobs explosive shells over walls and into formations the rifle line cannot reach.",
+  "unit_type": "siege",
+  "school": null,
+  "domain": "land",
+  "keywords": ["gunpowder", "indirect"],
+  "attributes": ["medium", "biological"],
+  "attack_type": "explosive",
+  "hp": 110,
+  "attack": 8,
+  "defense": 8,
+  "ranged_attack": 30,
+  "range": 3,
+  "movement": 2,
+  "vision": 2,
+  "cost": 200,
+  "tier": 6,
+  "tech_required": "mechanized_warfare",
+  "upgradeable_from": "cannon_crew",
+  "requires_resource": "iron_ore",
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/mortar_team.png",
+  "maintenance": 6,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "explosive", "siege", "ranged", "gunpowder", "era6", "dwarven"]
+  },
+  "flavor": "The arc finds what the rifle cannot.",
+  "archetype": "siege",
+  "promotion_tree": "ranged"
+}
diff --git a/public/resources/units/mounted_archer.json b/public/resources/units/mounted_archer.json
new file mode 100644
index 00000000..183d1834
--- /dev/null
+++ b/public/resources/units/mounted_archer.json
@@ -0,0 +1,38 @@
+{
+  "id": "mounted_archer",
+  "name": "Mounted Archer",
+  "description": "Boar-mounted dwarf with a recurved short bow, trained for harassing fire on the move.",
+  "unit_type": "ranged",
+  "school": null,
+  "domain": "land",
+  "keywords": ["fast", "skirmish"],
+  "attributes": ["medium", "biological"],
+  "attack_type": "piercing",
+  "hp": 100,
+  "attack": 14,
+  "defense": 10,
+  "ranged_attack": 18,
+  "range": 2,
+  "movement": 4,
+  "vision": 2,
+  "cost": 130,
+  "tier": 4,
+  "tech_required": "hardened_plate",
+  "upgradeable_from": "ram_rider",
+  "requires_resource": null,
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/mounted_archer.png",
+  "maintenance": 4,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "piercing", "cavalry", "ranged", "era4", "dwarven"]
+  },
+  "flavor": "The boar runs the line. The dwarf runs the bow.",
+  "archetype": "cavalry_walker",
+  "promotion_tree": "ranged"
+}
diff --git a/public/resources/units/mounted_rifleman.json b/public/resources/units/mounted_rifleman.json
new file mode 100644
index 00000000..35bd8a99
--- /dev/null
+++ b/public/resources/units/mounted_rifleman.json
@@ -0,0 +1,38 @@
+{
+  "id": "mounted_rifleman",
+  "name": "Mounted Rifleman",
+  "description": "Boar-mounted dwarf with a short rifled carbine. Fires on the move at ranges that feel unfair to the receiving line.",
+  "unit_type": "ranged",
+  "school": null,
+  "domain": "land",
+  "keywords": ["fast", "gunpowder"],
+  "attributes": ["medium", "biological"],
+  "attack_type": "piercing",
+  "hp": 130,
+  "attack": 14,
+  "defense": 12,
+  "ranged_attack": 32,
+  "range": 2,
+  "movement": 4,
+  "vision": 2,
+  "cost": 200,
+  "tier": 6,
+  "tech_required": "mechanized_warfare",
+  "upgradeable_from": "mounted_archer",
+  "requires_resource": null,
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/mounted_rifleman.png",
+  "maintenance": 6,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "piercing", "cavalry", "ranged", "gunpowder", "era6", "dwarven"]
+  },
+  "flavor": "Iron arrives faster than infantry. The boar agrees.",
+  "archetype": "cavalry_walker",
+  "promotion_tree": "ranged"
+}
diff --git a/public/resources/units/ram_sniper.json b/public/resources/units/ram_sniper.json
new file mode 100644
index 00000000..db0b1d88
--- /dev/null
+++ b/public/resources/units/ram_sniper.json
@@ -0,0 +1,38 @@
+{
+  "id": "ram_sniper",
+  "name": "Ram Sniper",
+  "description": "Heavy crossbow specialist on a war ram. Dismounts to fire from elevated positions, remounts to relocate.",
+  "unit_type": "ranged",
+  "school": null,
+  "domain": "land",
+  "keywords": ["mobile", "marksman"],
+  "attributes": ["medium", "biological"],
+  "attack_type": "piercing",
+  "hp": 110,
+  "attack": 12,
+  "defense": 10,
+  "ranged_attack": 28,
+  "range": 3,
+  "movement": 4,
+  "vision": 3,
+  "cost": 165,
+  "tier": 5,
+  "tech_required": "imperial_warfare",
+  "upgradeable_from": "ram_rider",
+  "requires_resource": null,
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/ram_sniper.png",
+  "maintenance": 5,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "piercing", "cavalry", "ranged", "era5", "dwarven"]
+  },
+  "flavor": "The ram finds the high ground. The dwarf does the rest.",
+  "archetype": "cavalry_walker",
+  "promotion_tree": "ranged"
+}
diff --git a/public/resources/units/siege_breaker.json b/public/resources/units/siege_breaker.json
new file mode 100644
index 00000000..cb534d52
--- /dev/null
+++ b/public/resources/units/siege_breaker.json
@@ -0,0 +1,38 @@
+{
+  "id": "siege_breaker",
+  "name": "Siege Breaker",
+  "description": "Hybrid heavy infantry trained both to assault walls and to break melee lines. Equipped with breaching charges, towershield, and warhammer.",
+  "unit_type": "melee",
+  "school": null,
+  "domain": "land",
+  "keywords": ["shock", "siege", "hybrid"],
+  "attributes": ["heavy", "biological"],
+  "attack_type": "blunt",
+  "hp": 220,
+  "attack": 32,
+  "defense": 28,
+  "ranged_attack": 0,
+  "range": 0,
+  "movement": 2,
+  "vision": 2,
+  "cost": 280,
+  "tier": 7,
+  "tech_required": "military_synthesis",
+  "upgradeable_from": "dwarf_hammerguard",
+  "requires_resource": "iron_ore",
+  "race_required": "dwarf",
+  "faction": "dwarf",
+  "mana_cost": null,
+  "sprite": "sprites/units/siege_breaker.png",
+  "maintenance": 8,
+  "auto_join": true,
+  "encyclopedia": {
+    "category": "combat",
+    "entry_type": "unit",
+    "detail_route": "/military/units",
+    "tags": ["land", "military", "blunt", "melee", "siege", "hybrid", "era7", "dwarven"]
+  },
+  "flavor": "First the wall, then the line behind it. Same hammer.",
+  "archetype": "infantry",
+  "promotion_tree": "melee"
+}