diff --git a/src/game/engine/src/entities/unit.gd b/src/game/engine/src/entities/unit.gd
index 5f4fcad8..ceef0742 100644
--- a/src/game/engine/src/entities/unit.gd
+++ b/src/game/engine/src/entities/unit.gd
@@ -51,6 +51,10 @@ var ranged_attack: int = 0
 var movement_remaining: int = 2
 var max_movement: int = 2
 
+# ── Vision ────────────────────────────────────────────────────────────
+## Sight radius in hexes, read by world_map_vision.recalculate_vision.
+var vision: int = 2
+
 # ── Per-turn state flags ──────────────────────────────────────────────
 var has_attacked: bool = false
 var is_fortified: bool = false
@@ -99,6 +103,7 @@ func _populate_from_data() -> void:
 	ranged_attack = data.get("ranged_attack", 0)
 	max_movement = data.get("movement", 2)
 	movement_remaining = max_movement
+	vision = data.get("vision", 2)
 	unit_type = data.get("combat_type", "")
 	if display_name.is_empty():
 		display_name = data.get("name", unit_id.capitalize())