diff --git a/hwe/battle_simulator.php b/hwe/battle_simulator.php
index fc8491cb..384d3ed5 100644
--- a/hwe/battle_simulator.php
+++ b/hwe/battle_simulator.php
@@ -65,8 +65,8 @@ if ($nationID) {
                 전역 설정
             </div>
             <div class="card-body dragpad_battle">
-                <div class="row">
-                    <div class="col-sm-6">
+                <div class="row gx-0">
+                    <div class="col-sm-4">
                         <div class="input-group">
                             <input type="number" class="form-control" aria-describedby="text_year" value="<?= $startYear ?>" disabled>
                             <div class="input-group-text"> 년 시작 </div>
@@ -76,9 +76,13 @@ if ($nationID) {
                             <div class="input-group-text"> 월 </div>
                         </div>
                     </div>
-                    <div class="col-sm-6">
+                    <div class="col-sm-5 px-2">
                         <div class="btn-toolbar" role="toolbar">
                             <div class="input-group me-2" role="group">
+                                <div class="input-group-text">
+                                    시드
+                                </div>
+                                <input type="text" class="form-control" id="seed" aria-describedby="text_seed">
                                 <div class="input-group-text">
                                     반복 횟수
                                 </div>
@@ -87,6 +91,10 @@ if ($nationID) {
                                     <option value="1000">1000회 (요약 표기)</option>
                                 </select>
                             </div>
+                        </div>
+                    </div>
+                    <div class="col-sm-3">
+                        <div class="btn-toolbar" role="toolbar">
                             <div class="btn-group me-2" role="group">
                                 <button type="button" class="btn btn-danger btn-begin_battle">전투</button>
                             </div>
diff --git a/hwe/j_simulate_battle.php b/hwe/j_simulate_battle.php
index e405be56..149288cc 100644
--- a/hwe/j_simulate_battle.php
+++ b/hwe/j_simulate_battle.php
@@ -84,6 +84,7 @@ $rawDefenderList = $query['defenderGenerals'];
 $rawDefenderCity = $query['defenderCity'];
 $rawDefenderNation = $query['defenderNation'];
 
+$warSeed = $query['seed'] ?? '';
 
 $generalCheck = [
     'required'=>[
@@ -297,10 +298,13 @@ function extractRankVar(array $rawVal):Map{
 function simulateBattle(
     $rawAttacker, $rawAttackerCity, $rawAttackerNation,
     $rawDefenderList, $rawDefenderCity, $rawDefenderNation,
-    $startYear, $year, $month
+    $startYear, $year, $month, $warSeed
 ){
 
-    $warSeed = bin2hex(random_bytes(16));
+    if(!$warSeed){
+        $warSeed = bin2hex(random_bytes(16));
+    }
+
     $warRng = new RandUtil(new LiteHashDRBG($warSeed));
 
     $attacker = new WarUnitGeneral(
@@ -400,12 +404,16 @@ $avgWar = 0;
 $attackerActivatedSkills = [];
 $defendersActivatedSkills = [];
 
+if($warSeed){
+    $repeatCnt = 1;
+}
+
 foreach(Util::range($repeatCnt) as $repeatIdx){
     /** @var WarUnit $attacker */
     [$attacker, $city, $battleResult, $conquerCity, $attackerRice, $defenderRice] = simulateBattle(
         $rawAttacker, $rawAttackerCity, $rawAttackerNation,
         $rawDefenderList, $rawDefenderCity, $rawDefenderNation,
-        $startYear, $year, $month
+        $startYear, $year, $month, $warSeed
     );
     $lastWarLog = Util::mapWithKey(function($key, $values){
         return ConvertLog(join('<br>', $values));
diff --git a/hwe/ts/battle_simulator.ts b/hwe/ts/battle_simulator.ts
index e47df0b0..9d5f98d0 100644
--- a/hwe/ts/battle_simulator.ts
+++ b/hwe/ts/battle_simulator.ts
@@ -84,6 +84,7 @@ type BattleInfo = {
     year: number,
     month: number,
     repeatCnt: number,
+    seed?: string,
 };
 
 type ExportedGeneralInfo = {
@@ -638,6 +639,12 @@ $(function ($) {
         const defenderCity = battleData.defenderCity;
         const defenderNation = battleData.defenderNation;
 
+        const seed = battleData.seed;
+
+        if(seed){
+            $('#seed').val(seed);
+        }
+
         $('#year').val(battleData.year);
         $('#month').val(battleData.month);
         $('#repeat_cnt').val(battleData.repeatCnt);
@@ -712,6 +719,8 @@ $(function ($) {
         const month = parseInt(unwrap_any<string>($('#month').val()));
         const repeatCnt = parseInt(unwrap_any<string>($('#repeat_cnt').val()));
 
+        const seed = unwrap_any<string>($('#seed').val());
+
         return {
             attackerGeneral: attackerGeneral,
             attackerCity: attackerCity,
@@ -724,6 +733,8 @@ $(function ($) {
             year: year,
             month: month,
             repeatCnt: repeatCnt,
+
+            seed,
         };
     }