diff --git a/hwe/compare/monthly_event_trace.php b/hwe/compare/monthly_event_trace.php
index 216511b2..11f2a016 100644
--- a/hwe/compare/monthly_event_trace.php
+++ b/hwe/compare/monthly_event_trace.php
@@ -114,12 +114,19 @@ function comparisonMonthlyDetails(array $observe, int $worldHistoryAfterId): arr
                 'term' => 'term',
                 'dead' => 'dead',
                 'population' => 'pop',
+                'populationMax' => 'pop_max',
                 'agriculture' => 'agri',
+                'agricultureMax' => 'agri_max',
                 'commerce' => 'comm',
+                'commerceMax' => 'comm_max',
                 'security' => 'secu',
+                'securityMax' => 'secu_max',
                 'trust' => 'trust',
+                'trade' => 'trade',
                 'defence' => 'def',
+                'defenceMax' => 'def_max',
                 'wall' => 'wall',
+                'wallMax' => 'wall_max',
                 'conflict' => 'conflict',
             ],
             ['conflict'],
@@ -198,6 +205,8 @@ function comparisonMonthlyEventTraceMain(): void
             'RaiseInvader',
             'AutoDeleteInvader',
             'InvaderEnding',
+            'ChangeCity',
+            'ProvideNPCTroopLeader',
         ];
         if (!in_array($actionName, $supportedActions, true)) {
             throw new \InvalidArgumentException('unsupported monthly action');
@@ -313,7 +322,7 @@ function comparisonMonthlyEventTraceMain(): void
             throw new \InvalidArgumentException('setup.gameEnvironment must be an object');
         }
         $gameStorage = KVStorage::getStorage(DB::db(), 'game_env');
-        foreach (['isunited', 'refreshLimit', 'block_change_scout'] as $key) {
+        foreach (['isunited', 'refreshLimit', 'block_change_scout', 'lastNPCTroopLeaderID'] as $key) {
             if (array_key_exists($key, $gameEnvironmentPatch)) {
                 $gameStorage->setValue($key, $gameEnvironmentPatch[$key]);
             }
@@ -370,7 +379,7 @@ function comparisonMonthlyEventTraceMain(): void
                 throw new \InvalidArgumentException('ProcessSemiAnnual requires resource');
             }
             $action = new $actionClass($resource);
-        } elseif (in_array($actionName, ['CreateManyNPC', 'RegNPC', 'RegNeutralNPC', 'RaiseInvader', 'AutoDeleteInvader'], true)) {
+        } elseif (in_array($actionName, ['CreateManyNPC', 'RegNPC', 'RegNeutralNPC', 'RaiseInvader', 'AutoDeleteInvader', 'ChangeCity'], true)) {
             $args = $request['args'] ?? [];
             if (!is_array($args)) {
                 throw new \InvalidArgumentException("{$actionName} args must be an array");
@@ -381,6 +390,9 @@ function comparisonMonthlyEventTraceMain(): void
             if ($actionName === 'RaiseInvader' && count($args) > 4) {
                 throw new \InvalidArgumentException('RaiseInvader args must have at most four entries');
             }
+            if ($actionName === 'ChangeCity' && count($args) !== 2) {
+                throw new \InvalidArgumentException('ChangeCity args must have exactly two entries');
+            }
             $action = new $actionClass(...$args);
         } else {
             $action = new $actionClass();
@@ -405,7 +417,7 @@ function comparisonMonthlyEventTraceMain(): void
             $actionEnvironment['killturn'] = $killturn;
             $actionEnvironment['turnterm'] = $turnterm;
         }
-        if (in_array($actionName, ['CreateManyNPC', 'RegNPC', 'RegNeutralNPC', 'RaiseNPCNation', 'RaiseInvader'], true)) {
+        if (in_array($actionName, ['CreateManyNPC', 'RegNPC', 'RegNeutralNPC', 'RaiseNPCNation', 'RaiseInvader', 'ProvideNPCTroopLeader'], true)) {
             $turnterm = $environment['turnterm'] ?? null;
             $turntime = $environment['turntime'] ?? null;
             $showImgLevel = $environment['show_img_level'] ?? 3;
@@ -437,7 +449,7 @@ function comparisonMonthlyEventTraceMain(): void
         $after = comparisonTurnStateSnapshot($snapshotRequest);
         $afterDetails = comparisonMonthlyDetails($snapshotRequest['observe'], $worldHistoryAfterId);
         $createdGenerals = [];
-        if (in_array($actionName, ['CreateManyNPC', 'RegNPC', 'RegNeutralNPC', 'RaiseNPCNation', 'RaiseInvader'], true)) {
+        if (in_array($actionName, ['CreateManyNPC', 'RegNPC', 'RegNeutralNPC', 'RaiseNPCNation', 'RaiseInvader', 'ProvideNPCTroopLeader'], true)) {
             foreach ($db->query('SELECT * FROM general WHERE no > %i ORDER BY no', $generalIdBeforeAction) as $row) {
                 $generalId = (int)$row['no'];
                 $turnRows = $db->query(
@@ -494,6 +506,10 @@ function comparisonMonthlyEventTraceMain(): void
                         'SELECT count(*) FROM rank_data WHERE general_id = %i AND value != 0',
                         $generalId,
                     ),
+                    'troop' => $db->queryFirstRow(
+                        'SELECT troop_leader AS id, nation AS nationId, name FROM troop WHERE troop_leader = %i',
+                        $generalId,
+                    ) ?: null,
                 ];
             }
         }
@@ -552,6 +568,12 @@ function comparisonMonthlyEventTraceMain(): void
             $response['createdGenerals'] = $createdGenerals;
             $response['createdNations'] = $createdNations;
         }
+        if ($actionName === 'ProvideNPCTroopLeader') {
+            $response['createdGenerals'] = $createdGenerals;
+            $response['gameEnvironment'] = KVStorage::getStorage(DB::db(), 'game_env')->getValues([
+                'lastNPCTroopLeaderID',
+            ]);
+        }
         if ($actionName === 'RaiseInvader') {
             $response['createdEvents'] = array_map(
                 static fn(array $row): array => comparisonPickRow(