diff --git a/apps/api/src/combat/combat-action.enum.ts b/apps/api/src/combat/combat-action.enum.ts
index 1dadb45..9e388dd 100644
--- a/apps/api/src/combat/combat-action.enum.ts
+++ b/apps/api/src/combat/combat-action.enum.ts
@@ -1,6 +1,7 @@
-// Only ATTACK is implemented in Slice 0.3. Future slices add HEAVY_STRIKE,
-// SHIELD_BASH, DEFEND, POTION, FLEE as real members with their own
-// CombatEngineService cases — do not add them here until their behavior ships.
 export enum CombatAction {
   ATTACK = 'ATTACK',
+  HEAVY_STRIKE = 'HEAVY_STRIKE',
+  SHIELD_BASH = 'SHIELD_BASH',
+  DEFEND = 'DEFEND',
+  POTION = 'POTION',
 }
diff --git a/apps/api/src/combat/combat-event-type.enum.ts b/apps/api/src/combat/combat-event-type.enum.ts
index 61294e1..6fea0f3 100644
--- a/apps/api/src/combat/combat-event-type.enum.ts
+++ b/apps/api/src/combat/combat-event-type.enum.ts
@@ -1,5 +1,9 @@
 export enum CombatEventType {
   DAMAGE = 'DAMAGE',
+  HEAL = 'HEAL',
+  DEFEND = 'DEFEND',
+  TELEGRAPH = 'TELEGRAPH',
+  INTERRUPT = 'INTERRUPT',
   COMBAT_WON = 'COMBAT_WON',
   COMBAT_LOST = 'COMBAT_LOST',
 }
diff --git a/apps/api/src/combat/combat.controller.spec.ts b/apps/api/src/combat/combat.controller.spec.ts
index ab89048..90d6899 100644
--- a/apps/api/src/combat/combat.controller.spec.ts
+++ b/apps/api/src/combat/combat.controller.spec.ts
@@ -80,7 +80,7 @@ describe('CombatController', () => {
   it('rejects an unknown action value', async () => {
     await request(app.getHttpServer())
       .post('/api/combats/combat-1/actions')
-      .send({ action: 'HEAVY_STRIKE' })
+      .send({ action: 'FLEE' })
       .expect(400);
 
     expect(performAction).not.toHaveBeenCalled();