diff --git a/contracts/src/models/combat.cairo b/contracts/src/models/combat.cairo
index 79bf36823..6c9cecef2 100644
--- a/contracts/src/models/combat.cairo
+++ b/contracts/src/models/combat.cairo
@@ -167,6 +167,14 @@ impl TroopsImpl of TroopsTrait {
         return resource_precision_u64;
     }
 
+    fn assert_minimum_for_battle(self: Troops) {
+        let total = self.knight_count + self.paladin_count + self.crossbowman_count;
+        assert!(
+            total >= (100 * RESOURCE_PRECISION).try_into().unwrap(),
+            "you need to have at least have 100 troops for battle"
+        );
+    }
+
     fn assert_normalized(self: Troops) {
         assert!(
             self.knight_count % Self::normalization_factor() == 0,
diff --git a/contracts/src/systems/combat/contracts/battle_systems.cairo b/contracts/src/systems/combat/contracts/battle_systems.cairo
index d72940a5a..9aa9af35e 100644
--- a/contracts/src/systems/combat/contracts/battle_systems.cairo
+++ b/contracts/src/systems/combat/contracts/battle_systems.cairo
@@ -364,6 +364,7 @@ mod battle_systems {
 
             let mut attacking_army: Army = world.read_model(attacking_army_id);
             attacking_army.assert_not_in_battle();
+            attacking_army.troops.assert_minimum_for_battle();
 
             let attacking_army_entity_owner: EntityOwner = world.read_model(attacking_army_id);
             attacking_army_entity_owner.assert_caller_owner(world);
@@ -877,6 +878,7 @@ mod battle_pillage_systems {
             // ensure attacking army is not in a battle
             let mut attacking_army: Army = world.read_model(army_id);
             attacking_army.assert_not_in_battle();
+            attacking_army.troops.assert_minimum_for_battle();
 
             // ensure army is at structure position
             let army_position: Position = world.read_model(army_id);