diff --git a/app/game-engine/src/turn/monthlyWarIncomeAction.ts b/app/game-engine/src/turn/monthlyWarIncomeAction.ts
new file mode 100644
index 0000000..9733cb4
--- /dev/null
+++ b/app/game-engine/src/turn/monthlyWarIncomeAction.ts
@@ -0,0 +1,80 @@
+import { asNumber, asRecord } from '@sammo-ts/common';
+import {
+    createIncomeActionContext,
+    getWarGoldIncome,
+    type CityIncomeSource,
+    type NationIncomeContext,
+    type NationTraitModule,
+    type TriggerNationalIncomeType,
+} from '@sammo-ts/logic';
+
+import type { InMemoryTurnWorld } from './inMemoryWorld.js';
+import type { MonthlyEventActionHandler } from './monthlyEventHandler.js';
+
+const toIncomeCity = (city: ReturnType<InMemoryTurnWorld['listCities']>[number]): CityIncomeSource => ({
+    id: city.id,
+    population: city.population,
+    populationMax: city.populationMax,
+    agriculture: city.agriculture,
+    agricultureMax: city.agricultureMax,
+    commerce: city.commerce,
+    commerceMax: city.commerceMax,
+    security: city.security,
+    securityMax: city.securityMax,
+    trust: asNumber(city.meta.trust, 50),
+    supplyState: city.supplyState,
+    defence: city.defence,
+    defenceMax: city.defenceMax,
+    wall: city.wall,
+    wallMax: city.wallMax,
+    meta: asRecord(city.meta),
+});
+
+export const createProcessWarIncomeHandler = (options: {
+    getWorld: () => InMemoryTurnWorld | null;
+    nationTraits?: ReadonlyMap<string, NationTraitModule>;
+}): MonthlyEventActionHandler => {
+    return () => {
+        const world = options.getWorld();
+        if (!world) {
+            return;
+        }
+
+        // 레거시는 부상병을 인구로 돌려보내기 전에 각 국가의 공급 도시에서
+        // dead/10을 합산한다. 국가 타입의 금 수입 modifier도 도시별로 적용된다.
+        const cities = world.listCities();
+        for (const nation of world.listNations()) {
+            if (nation.level <= 0) {
+                continue;
+            }
+            const trait = options.nationTraits?.get(nation.typeCode);
+            const actionContext = createIncomeActionContext(nation);
+            const modifyIncome = trait?.onCalcNationalIncome
+                ? (type: TriggerNationalIncomeType, amount: number) =>
+                      trait.onCalcNationalIncome!(actionContext, type, amount)
+                : undefined;
+            const incomeContext: NationIncomeContext = {
+                rate: asNumber(nation.meta.rate, 20),
+                modifyIncome,
+            };
+            const income = getWarGoldIncome(
+                incomeContext,
+                cities.filter((city) => city.nationId === nation.id).map(toIncomeCity)
+            );
+            world.updateNation(nation.id, { gold: nation.gold + income });
+        }
+
+        // 수입 계산이 끝난 뒤 모든 도시가 부상병 20%를 인구로 회복하고
+        // dead를 초기화한다. 레거시는 pop_max로 제한하지 않는다.
+        for (const city of cities) {
+            const dead = asNumber(city.meta.dead, 0);
+            world.updateCity(city.id, {
+                population: Math.round(city.population + dead * 0.2),
+                meta: {
+                    ...city.meta,
+                    dead: 0,
+                },
+            });
+        }
+    };
+};
diff --git a/app/game-engine/src/turn/turnDaemon.ts b/app/game-engine/src/turn/turnDaemon.ts
index 84179c1..ae19cf7 100644
--- a/app/game-engine/src/turn/turnDaemon.ts
+++ b/app/game-engine/src/turn/turnDaemon.ts
@@ -49,6 +49,7 @@ import { createRaiseDisasterHandler } from './monthlyDisasterAction.js';
 import { createUpdateCitySupplyHandler } from './monthlyCitySupplyAction.js';
 import { createUpdateNationLevelHandler } from './monthlyNationLevelAction.js';
 import { createProcessSemiAnnualHandler } from './monthlySemiAnnualAction.js';
+import { createProcessWarIncomeHandler } from './monthlyWarIncomeAction.js';
 import { DatabaseTurnDaemonLease, TurnDaemonLeaseUnavailableError } from '../lifecycle/databaseTurnDaemonLease.js';
 
 export interface TurnDaemonRuntimeOptions {
@@ -209,6 +210,13 @@ const createTurnDaemonRuntimeWithLease = async (
             nationTraits: nationTraitMap,
         })
     );
+    eventActions.set(
+        'ProcessWarIncome',
+        createProcessWarIncomeHandler({
+            getWorld: () => worldRef,
+            nationTraits: nationTraitMap,
+        })
+    );
     if (reservedTurnStoreHandle) {
         eventActions.set(
             'UpdateNationLevel',
diff --git a/app/game-engine/test/monthlyWarIncomeAction.test.ts b/app/game-engine/test/monthlyWarIncomeAction.test.ts
new file mode 100644
index 0000000..62ed0a7
--- /dev/null
+++ b/app/game-engine/test/monthlyWarIncomeAction.test.ts
@@ -0,0 +1,150 @@
+import { describe, expect, it } from 'vitest';
+import type { City, Nation, NationTraitModule } from '@sammo-ts/logic';
+
+import { InMemoryTurnWorld } from '../src/turn/inMemoryWorld.js';
+import { createProcessWarIncomeHandler } from '../src/turn/monthlyWarIncomeAction.js';
+import type { TurnEvent, TurnWorldSnapshot, TurnWorldState } from '../src/turn/types.js';
+
+const buildCity = (id: number, patch: Partial<City> = {}): City => ({
+    id,
+    name: `도시${id}`,
+    nationId: 1,
+    level: 1,
+    state: 0,
+    population: 1_000,
+    populationMax: 2_000,
+    agriculture: 100,
+    agricultureMax: 200,
+    commerce: 100,
+    commerceMax: 200,
+    security: 100,
+    securityMax: 200,
+    supplyState: 1,
+    frontState: 0,
+    defence: 100,
+    defenceMax: 200,
+    wall: 100,
+    wallMax: 200,
+    conflict: {},
+    meta: { trust: 50, dead: 0, marker: id },
+    ...patch,
+});
+
+const buildNation = (id: number, patch: Partial<Nation> = {}): Nation => ({
+    id,
+    name: `국가${id}`,
+    color: '#777777',
+    capitalCityId: null,
+    chiefGeneralId: null,
+    gold: 1_000,
+    rice: 1_000,
+    power: 0,
+    level: 1,
+    typeCode: 'che_중립',
+    meta: {},
+    ...patch,
+});
+
+const goldTrait: NationTraitModule = {
+    key: 'test-gold',
+    name: '금 수입 시험',
+    info: '',
+    kind: 'nation',
+    onCalcNationalIncome: (_context, type, amount) => (type === 'gold' ? amount * 1.1 : amount),
+};
+
+const event: TurnEvent = {
+    id: 1,
+    targetCode: 'pre_month',
+    priority: 9_000,
+    condition: true,
+    action: [['ProcessWarIncome']],
+    meta: {},
+};
+
+const buildHarness = () => {
+    const state: TurnWorldState = {
+        id: 1,
+        currentYear: 193,
+        currentMonth: 1,
+        tickSeconds: 600,
+        lastTurnTime: new Date('0193-01-01T00:00:00.000Z'),
+        meta: {},
+    };
+    const snapshot: TurnWorldSnapshot = {
+        scenarioConfig: {
+            stat: { total: 300, min: 10, max: 100, npcTotal: 150, npcMax: 50, npcMin: 10, chiefMin: 70 },
+            iconPath: '',
+            map: {},
+            const: {},
+            environment: { mapName: 'test', unitSet: 'default' },
+        },
+        map: {
+            id: 'test',
+            name: 'test',
+            cities: [],
+            defaults: { trust: 50, trade: 100, supplyState: 1, frontState: 0 },
+        },
+        generals: [],
+        cities: [
+            buildCity(1, { meta: { trust: 50, dead: 101, marker: 1 } }),
+            buildCity(2, { supplyState: 0, meta: { trust: 50, dead: 999, marker: 2 } }),
+            buildCity(3, { nationId: 2, meta: { trust: 50, dead: 1_000, marker: 3 } }),
+            buildCity(4, { nationId: 3, meta: { trust: 50, dead: 105, marker: 4 } }),
+            buildCity(5, {
+                nationId: 0,
+                population: 999,
+                populationMax: 1_000,
+                meta: { trust: 50, dead: 10, marker: 5 },
+            }),
+        ],
+        nations: [
+            buildNation(1),
+            buildNation(2, { level: 0 }),
+            buildNation(3, { typeCode: goldTrait.key }),
+        ],
+        troops: [],
+        diplomacy: [],
+        events: [event],
+        initialEvents: [],
+    };
+    const world = new InMemoryTurnWorld(state, snapshot, {
+        schedule: { entries: [{ startMinute: 0, tickMinutes: 10 }] },
+    });
+    const handler = createProcessWarIncomeHandler({
+        getWorld: () => world,
+        nationTraits: new Map([[goldTrait.key, goldTrait]]),
+    });
+    return { world, handler };
+};
+
+describe('ProcessWarIncome monthly action', () => {
+    it('credits supplied-city casualties before global recovery and preserves level/type rules', async () => {
+        const { world, handler } = buildHarness();
+
+        await handler(
+            [],
+            {
+                year: 193,
+                month: 1,
+                startyear: 190,
+                currentEventID: 1,
+                turnTime: new Date('0193-01-01T00:00:00.000Z'),
+            },
+            event
+        );
+
+        expect(world.getNationById(1)?.gold).toBe(1_010);
+        expect(world.getNationById(2)?.gold).toBe(1_000);
+        expect(world.getNationById(3)?.gold).toBe(1_012);
+        expect(world.listCities().map((city) => [city.id, city.population, city.meta.dead])).toEqual([
+            [1, 1_020, 0],
+            [2, 1_200, 0],
+            [3, 1_200, 0],
+            [4, 1_021, 0],
+            [5, 1_001, 0],
+        ]);
+        expect(world.getCityById(1)?.meta.marker).toBe(1);
+        expect(world.peekDirtyState().logs).toEqual([]);
+    });
+});
diff --git a/app/game-engine/test/monthlyWarIncomePersistence.integration.test.ts b/app/game-engine/test/monthlyWarIncomePersistence.integration.test.ts
new file mode 100644
index 0000000..a6224bc
--- /dev/null
+++ b/app/game-engine/test/monthlyWarIncomePersistence.integration.test.ts
@@ -0,0 +1,199 @@
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import type { City, Nation } from '@sammo-ts/logic';
+import { createGamePostgresConnector, type GamePrismaClient } from '@sammo-ts/infra';
+
+import { createDatabaseTurnHooks } from '../src/turn/databaseHooks.js';
+import { InMemoryTurnWorld } from '../src/turn/inMemoryWorld.js';
+import { createProcessWarIncomeHandler } from '../src/turn/monthlyWarIncomeAction.js';
+import type { TurnWorldSnapshot, TurnWorldState } from '../src/turn/types.js';
+
+const databaseUrl = process.env.INPUT_EVENT_DATABASE_URL;
+const integration = describe.skipIf(!databaseUrl);
+const nationId = 990_081;
+const cityIds = [990_081, 990_082] as const;
+
+const nation: Nation = {
+    id: nationId,
+    name: '전쟁수입저장국',
+    color: '#777777',
+    capitalCityId: cityIds[0],
+    chiefGeneralId: null,
+    gold: 1_000,
+    rice: 1_000,
+    power: 0,
+    level: 1,
+    typeCode: 'che_중립',
+    meta: {},
+};
+
+const buildCity = (id: number, supplyState: number, dead: number): City => ({
+    id,
+    name: `전쟁수입저장도시${id}`,
+    nationId,
+    level: 1,
+    state: 0,
+    population: 1_000,
+    populationMax: 2_000,
+    agriculture: 100,
+    agricultureMax: 200,
+    commerce: 100,
+    commerceMax: 200,
+    security: 100,
+    securityMax: 200,
+    supplyState,
+    frontState: 0,
+    defence: 100,
+    defenceMax: 200,
+    wall: 100,
+    wallMax: 200,
+    conflict: {},
+    meta: { trust: 50, trade: 100, region: 1, dead },
+});
+
+integration('monthly war income database persistence', () => {
+    let db: GamePrismaClient;
+    let closeDb: (() => Promise<void>) | undefined;
+
+    beforeAll(async () => {
+        const connector = createGamePostgresConnector({ url: databaseUrl! });
+        await connector.connect();
+        db = connector.prisma;
+        closeDb = () => connector.disconnect();
+        await db.city.deleteMany({ where: { id: { in: [...cityIds] } } });
+        await db.nation.deleteMany({ where: { id: nationId } });
+    });
+
+    afterAll(async () => {
+        await db.city.deleteMany({ where: { id: { in: [...cityIds] } } });
+        await db.nation.deleteMany({ where: { id: nationId } });
+        await closeDb?.();
+    });
+
+    it('persists supplied-city income before recovering every city casualty pool', async () => {
+        await db.nation.create({
+            data: {
+                id: nation.id,
+                name: nation.name,
+                color: nation.color,
+                capitalCityId: nation.capitalCityId,
+                chiefGeneralId: null,
+                gold: nation.gold,
+                rice: nation.rice,
+                tech: 0,
+                level: nation.level,
+                typeCode: nation.typeCode,
+                meta: {},
+            },
+        });
+        const cities = [buildCity(cityIds[0], 1, 101), buildCity(cityIds[1], 0, 999)];
+        await db.city.createMany({
+            data: cities.map((city) => ({
+                id: city.id,
+                name: city.name,
+                level: city.level,
+                nationId: city.nationId,
+                supplyState: city.supplyState,
+                frontState: city.frontState,
+                population: city.population,
+                populationMax: city.populationMax,
+                agriculture: city.agriculture,
+                agricultureMax: city.agricultureMax,
+                commerce: city.commerce,
+                commerceMax: city.commerceMax,
+                security: city.security,
+                securityMax: city.securityMax,
+                trust: 50,
+                trade: 100,
+                defence: city.defence,
+                defenceMax: city.defenceMax,
+                wall: city.wall,
+                wallMax: city.wallMax,
+                region: 1,
+                conflict: {},
+                meta: { dead: city.meta.dead },
+            })),
+        });
+        const row = await db.worldState.create({
+            data: {
+                scenarioCode: 'monthly-war-income-persistence',
+                currentYear: 193,
+                currentMonth: 1,
+                tickSeconds: 600,
+                config: {},
+                meta: {},
+            },
+        });
+        const state: TurnWorldState = {
+            id: row.id,
+            currentYear: 193,
+            currentMonth: 1,
+            tickSeconds: 600,
+            lastTurnTime: new Date('2026-07-25T00:10:00.000Z'),
+            meta: {},
+        };
+        const snapshot: TurnWorldSnapshot = {
+            scenarioConfig: {
+                stat: { total: 300, min: 10, max: 100, npcTotal: 150, npcMax: 50, npcMin: 10, chiefMin: 70 },
+                iconPath: '',
+                map: {},
+                const: {},
+                environment: { mapName: 'test', unitSet: 'default' },
+            },
+            map: {
+                id: 'test',
+                name: 'test',
+                cities: [],
+                defaults: { trust: 50, trade: 100, supplyState: 1, frontState: 0 },
+            },
+            generals: [],
+            cities,
+            nations: [nation],
+            troops: [],
+            diplomacy: [],
+            events: [],
+            initialEvents: [],
+        };
+        const world = new InMemoryTurnWorld(state, snapshot, {
+            schedule: { entries: [{ startMinute: 0, tickMinutes: 10 }] },
+        });
+        const dbHooks = await createDatabaseTurnHooks(databaseUrl!, world);
+
+        try {
+            const handler = createProcessWarIncomeHandler({ getWorld: () => world });
+            await handler(
+                [],
+                {
+                    year: 193,
+                    month: 1,
+                    startyear: 190,
+                    currentEventID: 1,
+                    turnTime: state.lastTurnTime,
+                },
+                { id: 1, targetCode: 'pre_month', priority: 0, condition: true, action: [], meta: {} }
+            );
+            await dbHooks.hooks.flushChanges?.({
+                lastTurnTime: state.lastTurnTime.toISOString(),
+                processedGenerals: 0,
+                processedTurns: 1,
+                durationMs: 0,
+                partial: false,
+            });
+
+            expect(await db.nation.findUniqueOrThrow({ where: { id: nationId } })).toMatchObject({
+                gold: 1_010,
+                rice: 1_000,
+            });
+            expect(await db.city.findUniqueOrThrow({ where: { id: cityIds[0] } })).toMatchObject({
+                population: 1_020,
+                meta: { dead: 0 },
+            });
+            expect(await db.city.findUniqueOrThrow({ where: { id: cityIds[1] } })).toMatchObject({
+                population: 1_200,
+                meta: { dead: 0 },
+            });
+        } finally {
+            await dbHooks.close();
+            await db.worldState.delete({ where: { id: row.id } });
+        }
+    });
+});