diff --git a/hwe/sammo/ActionLogger.php b/hwe/sammo/ActionLogger.php
index df15bf2b..b77ec2a2 100644
--- a/hwe/sammo/ActionLogger.php
+++ b/hwe/sammo/ActionLogger.php
@@ -42,6 +42,16 @@ class ActionLogger{
         }
     }
 
+    public function rollback(){
+        $this->generalHistoryLog = [];
+        $this->generalActionLog = [];
+        $this->generalBattleResultLog = [];
+        $this->generalBattleDetailLog = [];
+        $this->nationalHistoryLog = [];
+        $this->globalHistoryLog = [];
+        $this->globalActionLog = [];
+    }
+
     public function flush(){
         $db = DB::db();