diff --git a/apps/api/src/combat/combat.controller.spec.ts b/apps/api/src/combat/combat.controller.spec.ts
index a2e5be3..578a32e 100644
--- a/apps/api/src/combat/combat.controller.spec.ts
+++ b/apps/api/src/combat/combat.controller.spec.ts
@@ -10,14 +10,18 @@ import { CombatService } from './combat.service';
 describe('CombatController', () => {
   let app: INestApplication<App>;
   const getCombat = jest.fn();
+  const getActiveCombat = jest.fn();
   const performAction = jest.fn();
 
   beforeEach(async () => {
     getCombat.mockReset();
+    getActiveCombat.mockReset();
     performAction.mockReset();
     const module = await Test.createTestingModule({
       controllers: [CombatController],
-      providers: [{ provide: CombatService, useValue: { getCombat, performAction } }],
+      providers: [
+        { provide: CombatService, useValue: { getCombat, getActiveCombat, performAction } },
+      ],
     }).compile();
 
     app = module.createNestApplication<App>();
@@ -39,6 +43,27 @@ describe('CombatController', () => {
     expect(response.body).toEqual(combat);
   });
 
+  it('delegates GET /api/combats/active to combatService.getActiveCombat', async () => {
+    const combat = { id: 'combat-1', status: 'ACTIVE', round: 3, player: {}, monster: {}, events: [] };
+    getActiveCombat.mockResolvedValue(combat);
+
+    const response = await request(app.getHttpServer()).get('/api/combats/active').expect(200);
+
+    expect(getActiveCombat).toHaveBeenCalledWith(DEMO_CHARACTER_ID);
+    expect(getCombat).not.toHaveBeenCalled();
+    expect(response.body).toEqual(combat);
+  });
+
+  it('returns an empty body from GET /api/combats/active when no combat is running', async () => {
+    getActiveCombat.mockResolvedValue(null);
+
+    const response = await request(app.getHttpServer()).get('/api/combats/active').expect(200);
+
+    expect(getActiveCombat).toHaveBeenCalledWith(DEMO_CHARACTER_ID);
+    expect(response.body).toEqual({});
+    expect(getCombat).not.toHaveBeenCalled();
+  });
+
   it('delegates POST /api/combats/:combatId/actions with only the action field', async () => {
     const combat = { id: 'combat-1', status: 'ACTIVE', round: 2, player: {}, monster: {}, events: [] };
     performAction.mockResolvedValue(combat);
diff --git a/apps/api/src/combat/combat.controller.ts b/apps/api/src/combat/combat.controller.ts
index 4d68e56..2b2a6e8 100644
--- a/apps/api/src/combat/combat.controller.ts
+++ b/apps/api/src/combat/combat.controller.ts
@@ -7,6 +7,12 @@ import { CombatService } from './combat.service';
 export class CombatController {
   constructor(private readonly combatService: CombatService) {}
 
+  // Declared before ':combatId' so the literal segment wins the route match.
+  @Get('active')
+  getActiveCombat() {
+    return this.combatService.getActiveCombat(DEMO_CHARACTER_ID);
+  }
+
   @Get(':combatId')
   getCombat(@Param('combatId') combatId: string) {
     return this.combatService.getCombat(DEMO_CHARACTER_ID, combatId);
diff --git a/apps/api/src/combat/combat.service.spec.ts b/apps/api/src/combat/combat.service.spec.ts
index e0ee9ac..3fc0898 100644
--- a/apps/api/src/combat/combat.service.spec.ts
+++ b/apps/api/src/combat/combat.service.spec.ts
@@ -587,6 +587,58 @@ describe('CombatService', () => {
       );
     });
 
+    it('resolves the character ACTIVE combat so the hunt page can rejoin it', async () => {
+      const context = createService();
+      const started = await context.service.startCombat(
+        CHARACTER_ID,
+        ENCOUNTER_ID,
+      );
+      await context.service.performAction(
+        CHARACTER_ID,
+        started.id,
+        CombatAction.ATTACK,
+      );
+
+      const active = await context.service.getActiveCombat(CHARACTER_ID);
+
+      expect(active?.id).toBe(started.id);
+      expect(active?.status).toBe('ACTIVE');
+      expect(active?.round).toBe(2);
+    });
+
+    it('resolves null when the character has no ACTIVE combat', async () => {
+      const { service } = createService();
+
+      await expect(service.getActiveCombat(CHARACTER_ID)).resolves.toBeNull();
+    });
+
+    it('resolves null once the only combat has finished', async () => {
+      const state = createState({ monsters: [monster({ maxHp: 10 })] });
+      const context = createService({ state });
+      const started = await context.service.startCombat(
+        CHARACTER_ID,
+        ENCOUNTER_ID,
+      );
+      await context.service.performAction(
+        CHARACTER_ID,
+        started.id,
+        CombatAction.ATTACK,
+      );
+
+      await expect(
+        context.service.getActiveCombat(CHARACTER_ID),
+      ).resolves.toBeNull();
+    });
+
+    it('does not resolve another character ACTIVE combat', async () => {
+      const context = createService();
+      await context.service.startCombat(CHARACTER_ID, ENCOUNTER_ID);
+
+      await expect(
+        context.service.getActiveCombat(OTHER_CHARACTER_ID),
+      ).resolves.toBeNull();
+    });
+
     it('keeps returning LOST after the combat has ended', async () => {
       const state = createState({
         characters: [character({ baseHp: 1 })],
diff --git a/apps/api/src/combat/combat.service.ts b/apps/api/src/combat/combat.service.ts
index e85434d..60eb4e0 100644
--- a/apps/api/src/combat/combat.service.ts
+++ b/apps/api/src/combat/combat.service.ts
@@ -168,6 +168,24 @@ export class CombatService {
     return this.toCombatDto(combat, character.name, monster, events);
   }
 
+  async getActiveCombat(characterId: string): Promise<CombatDto | null> {
+    const combats = this.dataSource.getRepository(Combat);
+    const combat = await combats.findOne({
+      where: { characterId, status: CombatStatus.ACTIVE },
+    });
+    if (!combat) {
+      return null;
+    }
+
+    const [character, monster, events] = await Promise.all([
+      this.loadCharacter(combat.characterId),
+      this.loadMonster(combat.monsterDefinitionId),
+      this.loadEvents(combat.id),
+    ]);
+
+    return this.toCombatDto(combat, character.name, monster, events);
+  }
+
   async performAction(
     characterId: string,
     combatId: string,
diff --git a/apps/web/src/app/core/api/game-api.service.spec.ts b/apps/web/src/app/core/api/game-api.service.spec.ts
index 932aea3..bc3a992 100644
--- a/apps/web/src/app/core/api/game-api.service.spec.ts
+++ b/apps/web/src/app/core/api/game-api.service.spec.ts
@@ -65,6 +65,14 @@ describe('GameApiService', () => {
     request.flush({});
   });
 
+  it('gets the running combat from the literal active route', () => {
+    service.getActiveCombat().subscribe();
+
+    const request = http.expectOne('/api/combats/active');
+    expect(request.request.method).toBe('GET');
+    request.flush({});
+  });
+
   it('posts only the action enum when performing a combat action', () => {
     service.performCombatAction('combat-uuid', 'ATTACK').subscribe();
 
diff --git a/apps/web/src/app/core/api/game-api.service.ts b/apps/web/src/app/core/api/game-api.service.ts
index f3167f1..ae438f7 100644
--- a/apps/web/src/app/core/api/game-api.service.ts
+++ b/apps/web/src/app/core/api/game-api.service.ts
@@ -42,6 +42,10 @@ export class GameApiService {
     return this.http.get<Combat>(`/api/combats/${combatId}`);
   }
 
+  getActiveCombat(): Observable<Combat | null> {
+    return this.http.get<Combat | null>('/api/combats/active');
+  }
+
   performCombatAction(combatId: string, action: CombatAction): Observable<Combat> {
     return this.http.post<Combat>(`/api/combats/${combatId}/actions`, { action });
   }
diff --git a/apps/web/src/app/features/combat/combat.store.spec.ts b/apps/web/src/app/features/combat/combat.store.spec.ts
index 1e439a6..0add925 100644
--- a/apps/web/src/app/features/combat/combat.store.spec.ts
+++ b/apps/web/src/app/features/combat/combat.store.spec.ts
@@ -37,6 +37,7 @@ describe('CombatStore', () => {
   let api: {
     startCombat: ReturnType<typeof vi.fn>;
     getCombat: ReturnType<typeof vi.fn>;
+    getActiveCombat: ReturnType<typeof vi.fn>;
     performCombatAction: ReturnType<typeof vi.fn>;
   };
   let store: CombatStore;
@@ -45,6 +46,7 @@ describe('CombatStore', () => {
     api = {
       startCombat: vi.fn(() => of(startedCombat)),
       getCombat: vi.fn(() => of(startedCombat)),
+      getActiveCombat: vi.fn(() => of(startedCombat)),
       performCombatAction: vi.fn(() => of(afterAttack)),
     };
 
@@ -77,6 +79,37 @@ describe('CombatStore', () => {
 
     expect(store.combat()).toBeNull();
     expect(store.error()).toBe('Du befindest dich bereits in einem Kampf.');
+    expect(store.errorCode()).toBe('COMBAT_ALREADY_ACTIVE');
+  });
+
+  it('loads the running combat and clears the error that sent us looking for it', async () => {
+    api.startCombat.mockReturnValue(
+      throwError(
+        () =>
+          new HttpErrorResponse({
+            status: 409,
+            error: { statusCode: 409, code: 'COMBAT_ALREADY_ACTIVE', message: 'Active.' },
+          }),
+      ),
+    );
+    await store.startCombat('encounter-1');
+
+    const active = await store.loadActiveCombat();
+
+    expect(api.getActiveCombat).toHaveBeenCalledOnce();
+    expect(active).toEqual(startedCombat);
+    expect(store.combat()).toEqual(startedCombat);
+    expect(store.error()).toBeNull();
+    expect(store.errorCode()).toBeNull();
+  });
+
+  it('resolves null and keeps the combat empty when no fight is running', async () => {
+    api.getActiveCombat.mockReturnValue(of(null));
+
+    const active = await store.loadActiveCombat();
+
+    expect(active).toBeNull();
+    expect(store.combat()).toBeNull();
   });
 
   it('loads a combat by id', async () => {
diff --git a/apps/web/src/app/features/combat/combat.store.ts b/apps/web/src/app/features/combat/combat.store.ts
index 34b4578..3ca086a 100644
--- a/apps/web/src/app/features/combat/combat.store.ts
+++ b/apps/web/src/app/features/combat/combat.store.ts
@@ -24,24 +24,46 @@ export class CombatStore {
   private readonly loadingState = signal(false);
   private readonly actionPendingState = signal(false);
   private readonly errorState = signal<string | null>(null);
+  private readonly errorCodeState = signal<string | null>(null);
 
   readonly combat = this.combatState.asReadonly();
   readonly loading = this.loadingState.asReadonly();
   readonly actionPending = this.actionPendingState.asReadonly();
   readonly error = this.errorState.asReadonly();
+  readonly errorCode = this.errorCodeState.asReadonly();
 
   constructor(private readonly api: GameApiService) {}
 
   async startCombat(encounterId: string): Promise<void> {
     this.loadingState.set(true);
-    this.errorState.set(null);
+    this.clearError();
 
     try {
       const combat = await firstValueFrom(this.api.startCombat(encounterId));
       this.combatState.set(combat);
     } catch (error) {
       this.combatState.set(null);
-      this.errorState.set(this.toErrorMessage(error));
+      this.setError(error);
+    } finally {
+      this.loadingState.set(false);
+    }
+  }
+
+  // Resolves the combat the character is already in, so an attack rejected with
+  // COMBAT_ALREADY_ACTIVE can rejoin that fight instead of dead-ending.
+  async loadActiveCombat(): Promise<Combat | null> {
+    this.loadingState.set(true);
+
+    try {
+      const combat = await firstValueFrom(this.api.getActiveCombat());
+      if (combat) {
+        this.combatState.set(combat);
+        this.clearError();
+      }
+      return combat;
+    } catch (error) {
+      this.setError(error);
+      return null;
     } finally {
       this.loadingState.set(false);
     }
@@ -49,13 +71,13 @@ export class CombatStore {
 
   async loadCombat(combatId: string): Promise<void> {
     this.loadingState.set(true);
-    this.errorState.set(null);
+    this.clearError();
 
     try {
       const combat = await firstValueFrom(this.api.getCombat(combatId));
       this.combatState.set(combat);
     } catch (error) {
-      this.errorState.set(this.toErrorMessage(error));
+      this.setError(error);
     } finally {
       this.loadingState.set(false);
     }
@@ -68,13 +90,13 @@ export class CombatStore {
     }
 
     this.actionPendingState.set(true);
-    this.errorState.set(null);
+    this.clearError();
 
     try {
       const updated = await firstValueFrom(this.api.performCombatAction(combat.id, 'ATTACK'));
       this.combatState.set(updated);
     } catch (error) {
-      this.errorState.set(this.toErrorMessage(error));
+      this.setError(error);
     } finally {
       this.actionPendingState.set(false);
     }
@@ -82,6 +104,20 @@ export class CombatStore {
 
   clearError(): void {
     this.errorState.set(null);
+    this.errorCodeState.set(null);
+  }
+
+  private setError(error: unknown): void {
+    this.errorCodeState.set(this.toErrorCode(error));
+    this.errorState.set(this.toErrorMessage(error));
+  }
+
+  private toErrorCode(error: unknown): string | null {
+    if (error instanceof HttpErrorResponse) {
+      return (error.error as { code?: string } | null)?.code ?? null;
+    }
+
+    return null;
   }
 
   private toErrorMessage(error: unknown): string {
diff --git a/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.spec.ts b/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.spec.ts
index 430ff18..f39f1a0 100644
--- a/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.spec.ts
+++ b/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.spec.ts
@@ -98,7 +98,9 @@ describe('HuntPageComponent', () => {
   let combatStore: {
     combat: ReturnType<typeof signal<Combat | null>>;
     error: ReturnType<typeof signal<string | null>>;
+    errorCode: ReturnType<typeof signal<string | null>>;
     startCombat: ReturnType<typeof vi.fn>;
+    loadActiveCombat: ReturnType<typeof vi.fn>;
     clearError: ReturnType<typeof vi.fn>;
   };
   let router: Router;
@@ -118,7 +120,9 @@ describe('HuntPageComponent', () => {
     combatStore = {
       combat: signal<Combat | null>(null),
       error: signal<string | null>(null),
+      errorCode: signal<string | null>(null),
       startCombat: vi.fn(() => Promise.resolve()),
+      loadActiveCombat: vi.fn(() => Promise.resolve(null)),
       clearError: vi.fn(),
     };
 
@@ -226,6 +230,47 @@ describe('HuntPageComponent', () => {
     expect(router.navigate).not.toHaveBeenCalledWith(['/combat', expect.anything()]);
   });
 
+  it('rejoins the running combat when the attack is rejected with COMBAT_ALREADY_ACTIVE', async () => {
+    const fixture = await setup(burnedRoad, threeEncounterHunt);
+    combatStore.startCombat.mockImplementation(async () => {
+      combatStore.errorCode.set('COMBAT_ALREADY_ACTIVE');
+      combatStore.error.set('Du befindest dich bereits in einem Kampf.');
+    });
+    combatStore.loadActiveCombat.mockResolvedValue({ ...startedCombat, id: 'combat-running' });
+    const element = fixture.nativeElement as HTMLElement;
+
+    const attackButtons = Array.from(element.querySelectorAll('button')).filter(
+      (button) => button.textContent?.trim() === 'Angreifen',
+    );
+    attackButtons[0].click();
+    await Promise.resolve();
+    await Promise.resolve();
+    await Promise.resolve();
+
+    expect(combatStore.loadActiveCombat).toHaveBeenCalledOnce();
+    expect(router.navigate).toHaveBeenCalledWith(['/combat', 'combat-running']);
+  });
+
+  it('does not look for a running combat when the attack fails for another reason', async () => {
+    const fixture = await setup(burnedRoad, threeEncounterHunt);
+    combatStore.startCombat.mockImplementation(async () => {
+      combatStore.errorCode.set('HUNT_ENCOUNTER_ALREADY_CONSUMED');
+      combatStore.error.set('Diese Begegnung wurde bereits genutzt.');
+    });
+    const element = fixture.nativeElement as HTMLElement;
+
+    const attackButtons = Array.from(element.querySelectorAll('button')).filter(
+      (button) => button.textContent?.trim() === 'Angreifen',
+    );
+    attackButtons[0].click();
+    await Promise.resolve();
+    await Promise.resolve();
+    await Promise.resolve();
+
+    expect(combatStore.loadActiveCombat).not.toHaveBeenCalled();
+    expect(router.navigate).not.toHaveBeenCalledWith(['/combat', expect.anything()]);
+  });
+
   it('shows a combat-start error and dismisses it', async () => {
     const fixture = await setup(burnedRoad, threeEncounterHunt);
     combatStore.error.set('Du befindest dich bereits in einem Kampf.');
diff --git a/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.ts b/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.ts
index 476f7cc..74eadeb 100644
--- a/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.ts
+++ b/apps/web/src/app/features/hunting/hunt-page/hunt-page.component.ts
@@ -48,6 +48,16 @@ export class HuntPageComponent implements OnInit {
     const combat = this.combatStore.combat();
     if (combat) {
       void this.router.navigate(['/combat', combat.id]);
+      return;
+    }
+
+    // A fight already running is not a dead end: rejoin it rather than
+    // leaving the player stuck behind an error they cannot act on.
+    if (this.combatStore.errorCode() === 'COMBAT_ALREADY_ACTIVE') {
+      const active = await this.combatStore.loadActiveCombat();
+      if (active) {
+        void this.router.navigate(['/combat', active.id]);
+      }
     }
   }