diff --git a/hwe/func_converter.php b/hwe/func_converter.php
index 6286082d..b7c765fc 100644
--- a/hwe/func_converter.php
+++ b/hwe/func_converter.php
@@ -398,7 +398,8 @@ function getBill(int $dedication) : int{
 function getCost(int $armtype) : int {
     //FIXME: 정말로 side effect가 없으려면 query는 밖으로 이동해야함.
     //TODO: 병종 값이 column으로 들어있는건 전혀 옳지 않음. key->value 형태로 바꿔야함
-    return DB::db()->queryFirstColumn('select %b from game limit 1', sprintf('cst%d', $armtype));
+
+    return GameUnitConst::byID($armtype)->cost;
 }
 
 function TechLimit($startyear, $year, $tech) : int {
diff --git a/hwe/func_gamerule.php b/hwe/func_gamerule.php
index 12820c90..5a6a94ab 100644
--- a/hwe/func_gamerule.php
+++ b/hwe/func_gamerule.php
@@ -237,7 +237,7 @@ function SetNationFront($nationNo) {
 
     if($adj){
         $db->update('city', [
-            'front'=>0
+            'front'=>1
         ], 'nation=%i and city in %li', $nationNo, array_keys($adj));
     }
 }
diff --git a/hwe/process_war.php b/hwe/process_war.php
index 770581dd..7a7df738 100644
--- a/hwe/process_war.php
+++ b/hwe/process_war.php
@@ -1862,7 +1862,7 @@ function ConquerCity($game, $general, $city, $nation, $destnation) {
             $cities = [];
             foreach(
                 DB::db()->query(
-                    'SELECT city, pop FROM city WHERE nation=%i and city!=%i', 
+                    'SELECT nation, city, pop FROM city WHERE nation=%i and city!=%i', 
                     $destnation['nation'], 
                     $city['city']
                 ) as $row