diff --git a/hwe/func_command.php b/hwe/func_command.php
index f6f3be0a..0064cf43 100644
--- a/hwe/func_command.php
+++ b/hwe/func_command.php
@@ -106,10 +106,10 @@ function getTurn(array $general, $type, $font=1) {
                 $double = $command[1];
 
                 if($double == 98){
-                    $nationName = '(랜덤국가)';
+                    $nationName = '건국된 임의 국가';
                 }
                 else if($double == 99){
-                    $nationName = '[랜덤국가]';
+                    $nationName = '임의의 국가';
                 }
                 else{
                     $nationName = getNationStaticInfo($double)['name']??'?!?!';
diff --git a/hwe/func_process_personnel.php b/hwe/func_process_personnel.php
index bc21653b..d3e6e984 100644
--- a/hwe/func_process_personnel.php
+++ b/hwe/func_process_personnel.php
@@ -134,7 +134,7 @@ function process_25(&$general) {
         $allGen = array_sum($generals);
 
         $genLimit = GameConst::$defaultMaxGeneral;
-        if($admin['join_mode'] == 'onlyRandom' && $admin['init_year'] == $admin['year'] && $admin['init_month'] + 1 <= $admin['month']){
+        if($admin['join_mode'] == 'onlyRandom' && $admin['init_year'] == $admin['year'] && in_array($admin['month'], [$admin['init_month'], ($admin['init_month'] + 1) %12])){
             $genLimit = GameConst::$initialNationGenLimitForRandInit;
         }
         else if($admin['year'] < $admin['startyear'] + 3){
@@ -167,6 +167,9 @@ function process_25(&$general) {
         if($randVals){
             $nation = $nations[Util::choiceRandomUsingWeight($randVals)];
         }
+        else{
+            $nation = null;
+        }
 
     } else {
         $nation = $db->queryFirstRow('SELECT `name`,nation,scout,`level` FROM nation WHERE nation=%i', $where);
diff --git a/hwe/install.php b/hwe/install.php
index 82ea81e4..4fcc5d39 100644
--- a/hwe/install.php
+++ b/hwe/install.php
@@ -159,8 +159,8 @@ if($session->userGrade < 5 && !$allowReset){
                                 <label class="btn btn-secondary active">
                                     <input type="radio" name="join_mode" value="full" checked>일반
                                 </label>
-                                <label class="btn btn-secondary active">
-                                    <input type="radio" name="join_mode" value="onlyRandom" checked>랜덤 임관
+                                <label class="btn btn-secondary">
+                                    <input type="radio" name="join_mode" value="onlyRandom">랜덤 임관
                                 </label>
                             </div>
                         </div>
diff --git a/hwe/j_install.php b/hwe/j_install.php
index 02c2b4c9..c4a753d5 100644
--- a/hwe/j_install.php
+++ b/hwe/j_install.php
@@ -50,7 +50,6 @@ $v->rule('required', [
     'scenario',
     'fiction',
     'extend',
-    'join_mode',
     'npcmode',
     'show_img_level',
     'tournament_trig',
diff --git a/hwe/js/install.js b/hwe/js/install.js
index 4fa6c91d..893ff3fc 100644
--- a/hwe/js/install.js
+++ b/hwe/js/install.js
@@ -155,7 +155,7 @@ function formSetup(){
                 show_img_level:$('#show_img_level input:radio:checked').val(),
                 tournament_trig:$('#tournament_trig input:radio:checked').val(),
                 reserve_open:$('#reserve_open').val(),
-                join_mode:$('#join_mode').val(),
+                join_mode:$('#join_mode input:radio:checked').val(),
             }
         }).then(function(result){
             var deferred = $.Deferred();
diff --git a/hwe/processing.php b/hwe/processing.php
index 34f50183..fa7284bf 100644
--- a/hwe/processing.php
+++ b/hwe/processing.php
@@ -746,7 +746,7 @@ function command_25($turn, $command) {
     
 </select>
 <input type=submit value=임관>
-<input type=hidden name=command value=$command>";
+<input type=hidden name=command value=<?=$command?>>
     <?php foreach(range(0, count(turn) - 1) as $i): ?>
             <input type=hidden name=turn[] value=<?=$turn[$i]?>>
     <?php endforeach; ?>
diff --git a/src/sammo/TimeUtil.php b/src/sammo/TimeUtil.php
index 84572bcb..58bd50ec 100644
--- a/src/sammo/TimeUtil.php
+++ b/src/sammo/TimeUtil.php
@@ -63,4 +63,18 @@ class TimeUtil
     {
         return date('H:i:s', strtotime('00:00:00') + $second);
     }
+
+    /**
+     * $year년, $month월 부터 $afterMonth 개월 이내인지. $afterMonth 포함.
+     * 
+     */
+    public static function IsRangeMonth(int $baseYear, int $baseMonth, int $askYear, int $askMonth, int $afterMonth):bool{
+        if($month < 1 || $month > 12){
+            throw new \InvalidArgumentException('개월이 올바르지 않음');
+        }
+        if($afterMonth < 0){
+            throw new \InvalidArgumentException('기간이 올바르지 않음');
+        }
+
+    }
 }