diff --git a/packages/logic/src/actions/engine.ts b/packages/logic/src/actions/engine.ts
new file mode 100644
index 0000000..01b87b7
--- /dev/null
+++ b/packages/logic/src/actions/engine.ts
@@ -0,0 +1,184 @@
+import type { RandomGenerator } from '@sammo-ts/common';
+import type {
+    City,
+    General,
+    GeneralRole,
+    GeneralTriggerState,
+    Nation,
+    StatBlock,
+} from '../domain/entities.js';
+import type { GeneralActionContext } from '../triggers/general.js';
+import { getNextTurnAt, type TurnSchedule } from '../turn/calendar.js';
+
+export interface GeneralActionResolveContext<
+    TriggerState extends GeneralTriggerState = GeneralTriggerState
+> extends GeneralActionContext<TriggerState> {
+    rng: RandomGenerator;
+    city?: City;
+    nation?: Nation | null;
+}
+
+export interface TurnScheduleContext {
+    now: Date;
+    schedule: TurnSchedule;
+}
+
+export interface GeneralPatchEffect {
+    type: 'general:patch';
+    patch: Partial<General>;
+}
+
+export interface CityPatchEffect {
+    type: 'city:patch';
+    patch: Partial<City>;
+}
+
+export interface NationPatchEffect {
+    type: 'nation:patch';
+    patch: Partial<Nation>;
+}
+
+export interface LogEffect {
+    type: 'log';
+    message: string;
+}
+
+export interface NextTurnOverrideEffect {
+    type: 'schedule:override';
+    nextTurnAt: Date;
+}
+
+export type GeneralActionEffect =
+    | GeneralPatchEffect
+    | CityPatchEffect
+    | NationPatchEffect
+    | LogEffect
+    | NextTurnOverrideEffect;
+
+export interface GeneralActionOutcome {
+    effects: GeneralActionEffect[];
+}
+
+export interface GeneralActionResolver<
+    TriggerState extends GeneralTriggerState = GeneralTriggerState
+> {
+    key: string;
+    resolve(context: GeneralActionResolveContext<TriggerState>): GeneralActionOutcome;
+}
+
+export interface GeneralActionResolution {
+    general: General;
+    city?: City;
+    nation?: Nation | null;
+    nextTurnAt: Date;
+    logs: string[];
+    effects: GeneralActionEffect[];
+}
+
+const mergeStats = (base: StatBlock, patch: Partial<StatBlock>): StatBlock => ({
+    leadership: patch.leadership ?? base.leadership,
+    strength: patch.strength ?? base.strength,
+    intelligence: patch.intelligence ?? base.intelligence,
+});
+
+const mergeRole = (
+    base: GeneralRole,
+    patch: Partial<GeneralRole>
+): GeneralRole => ({
+    ...base,
+    ...patch,
+    items: {
+        ...base.items,
+        ...(patch.items ?? {}),
+    },
+});
+
+const mergeTriggerState = (
+    base: GeneralTriggerState,
+    patch: Partial<GeneralTriggerState>
+): GeneralTriggerState => ({
+    ...base,
+    ...patch,
+    flags: { ...base.flags, ...(patch.flags ?? {}) },
+    counters: { ...base.counters, ...(patch.counters ?? {}) },
+    modifiers: { ...base.modifiers, ...(patch.modifiers ?? {}) },
+    meta: { ...base.meta, ...(patch.meta ?? {}) },
+});
+
+const applyGeneralPatch = (base: General, patch: Partial<General>): General => ({
+    ...base,
+    ...patch,
+    stats: patch.stats ? mergeStats(base.stats, patch.stats) : base.stats,
+    role: patch.role ? mergeRole(base.role, patch.role) : base.role,
+    triggerState: patch.triggerState
+        ? mergeTriggerState(base.triggerState, patch.triggerState)
+        : base.triggerState,
+    meta: patch.meta ? { ...base.meta, ...patch.meta } : base.meta,
+});
+
+const applyCityPatch = (base: City, patch: Partial<City>): City => ({
+    ...base,
+    ...patch,
+    meta: patch.meta ? { ...base.meta, ...patch.meta } : base.meta,
+});
+
+const applyNationPatch = (base: Nation, patch: Partial<Nation>): Nation => ({
+    ...base,
+    ...patch,
+    meta: patch.meta ? { ...base.meta, ...patch.meta } : base.meta,
+});
+
+// 행동 결과를 Effect로 모아 상태/턴 계산을 수행한다.
+export const resolveGeneralAction = <
+    TriggerState extends GeneralTriggerState = GeneralTriggerState
+>(
+    resolver: GeneralActionResolver<TriggerState>,
+    context: GeneralActionResolveContext<TriggerState>,
+    scheduleContext: TurnScheduleContext
+): GeneralActionResolution => {
+    const outcome = resolver.resolve(context);
+    const logs: string[] = [];
+    let nextGeneral = context.general;
+    let nextCity = context.city;
+    let nextNation = context.nation ?? null;
+    let nextTurnAtOverride: Date | null = null;
+
+    for (const effect of outcome.effects) {
+        switch (effect.type) {
+            case 'general:patch':
+                nextGeneral = applyGeneralPatch(nextGeneral, effect.patch);
+                break;
+            case 'city:patch':
+                if (nextCity) {
+                    nextCity = applyCityPatch(nextCity, effect.patch);
+                }
+                break;
+            case 'nation:patch':
+                if (nextNation) {
+                    nextNation = applyNationPatch(nextNation, effect.patch);
+                }
+                break;
+            case 'log':
+                logs.push(effect.message);
+                break;
+            case 'schedule:override':
+                nextTurnAtOverride = effect.nextTurnAt;
+                break;
+            default:
+                break;
+        }
+    }
+
+    const nextTurnAt =
+        nextTurnAtOverride ??
+        getNextTurnAt(scheduleContext.now, scheduleContext.schedule);
+
+    return {
+        general: nextGeneral,
+        city: nextCity,
+        nation: nextNation,
+        nextTurnAt,
+        logs,
+        effects: outcome.effects,
+    };
+};
diff --git a/packages/logic/src/actions/index.ts b/packages/logic/src/actions/index.ts
index 13cea07..4ee3183 100644
--- a/packages/logic/src/actions/index.ts
+++ b/packages/logic/src/actions/index.ts
@@ -1 +1,2 @@
 export * from './domestic/index.js';
+export * from './engine.js';
diff --git a/packages/logic/src/index.ts b/packages/logic/src/index.ts
index 79b1b2f..70f9b62 100644
--- a/packages/logic/src/index.ts
+++ b/packages/logic/src/index.ts
@@ -5,4 +5,5 @@ export * from './ports/world.js';
 export * from './ports/worldSnapshot.js';
 export * from './scenario/index.js';
 export * from './triggers/index.js';
+export * from './turn/index.js';
 export * from './world/index.js';
diff --git a/packages/logic/src/turn/calendar.ts b/packages/logic/src/turn/calendar.ts
new file mode 100644
index 0000000..c639e1c
--- /dev/null
+++ b/packages/logic/src/turn/calendar.ts
@@ -0,0 +1,85 @@
+export interface TurnScheduleEntry {
+    startMinute: number;
+    tickMinutes: number;
+}
+
+export interface TurnSchedule {
+    entries: TurnScheduleEntry[];
+}
+
+const MINUTES_PER_DAY = 24 * 60;
+
+const toMinuteOfDay = (date: Date): number =>
+    date.getHours() * 60 + date.getMinutes();
+
+const toLocalDateAtMinute = (date: Date, minuteOfDay: number, dayOffset = 0): Date => {
+    const hour = Math.floor(minuteOfDay / 60);
+    const minute = minuteOfDay % 60;
+    return new Date(
+        date.getFullYear(),
+        date.getMonth(),
+        date.getDate() + dayOffset,
+        hour,
+        minute,
+        0,
+        0
+    );
+};
+
+const normalizeEntries = (entries: TurnScheduleEntry[]): TurnScheduleEntry[] => {
+    const normalized = entries
+        .map((entry) => ({
+            startMinute: Math.max(0, Math.min(MINUTES_PER_DAY - 1, entry.startMinute)),
+            tickMinutes: Math.max(1, entry.tickMinutes),
+        }))
+        .sort((a, b) => a.startMinute - b.startMinute);
+
+    if (normalized.length === 0) {
+        throw new Error('Turn schedule needs at least one entry.');
+    }
+
+    return normalized;
+};
+
+const findCurrentEntryIndex = (minuteOfDay: number, entries: TurnScheduleEntry[]): number => {
+    for (let i = entries.length - 1; i >= 0; i -= 1) {
+        if (entries[i].startMinute <= minuteOfDay) {
+            return i;
+        }
+    }
+    return -1;
+};
+
+export const getTickMinutesAt = (date: Date, schedule: TurnSchedule): number => {
+    const entries = normalizeEntries(schedule.entries);
+    const minuteOfDay = toMinuteOfDay(date);
+    const index = findCurrentEntryIndex(minuteOfDay, entries);
+    const entry = index >= 0 ? entries[index] : entries[entries.length - 1];
+    return entry.tickMinutes;
+};
+
+export const getNextTurnAt = (date: Date, schedule: TurnSchedule): Date => {
+    const entries = normalizeEntries(schedule.entries);
+    const minuteOfDay = toMinuteOfDay(date);
+    const index = findCurrentEntryIndex(minuteOfDay, entries);
+    const currentIndex = index >= 0 ? index : entries.length - 1;
+    const startDayOffset = index >= 0 ? 0 : -1;
+    const nextIndex = (currentIndex + 1) % entries.length;
+    const nextDayOffset = startDayOffset + (nextIndex > currentIndex ? 0 : 1);
+
+    const currentEntry = entries[currentIndex];
+    const segmentStart = toLocalDateAtMinute(date, currentEntry.startMinute, startDayOffset);
+    const segmentEnd = toLocalDateAtMinute(date, entries[nextIndex].startMinute, nextDayOffset);
+
+    const elapsedMinutes = (date.getTime() - segmentStart.getTime()) / 60000;
+    const nextStep = Math.floor(elapsedMinutes / currentEntry.tickMinutes) + 1;
+    const nextCandidate = new Date(
+        segmentStart.getTime() + nextStep * currentEntry.tickMinutes * 60000
+    );
+
+    if (nextCandidate.getTime() < segmentEnd.getTime()) {
+        return nextCandidate;
+    }
+
+    return segmentEnd;
+};
diff --git a/packages/logic/src/turn/index.ts b/packages/logic/src/turn/index.ts
new file mode 100644
index 0000000..7a9b080
--- /dev/null
+++ b/packages/logic/src/turn/index.ts
@@ -0,0 +1 @@
+export * from './calendar.js';