VCAI will answer CommanderGotLevel query.

AI/VCAI/VCAI.cpp

@@ -837,6 +837,14 @@ void VCAI::heroGotLevel(const CGHeroInstance *hero, int pskill, std::vector<ui16
 	requestActionASAP(boost::bind(callback, 0));
 }
 
+void VCAI::commanderGotLevel (const CCommanderInstance * commander, std::vector<ui32> skills, boost::function<void(ui32)> &callback)
+{
+	NET_EVENT_HANDLER;
+	LOG_ENTRY;
+	status.addQuery();
+	requestActionASAP(boost::bind(callback, 0));
+}
+
 void VCAI::showBlockingDialog(const std::string &text, const std::vector<Component> &components, ui32 askID, const int soundID, bool selection, bool cancel)
 {
 	NET_EVENT_HANDLER;

AI/VCAI/VCAI.h

@@ -246,7 +246,7 @@ public:
 	virtual void init(CCallback * CB);
 	virtual void yourTurn();
 	virtual void heroGotLevel(const CGHeroInstance *hero, int pskill, std::vector<ui16> &skills, boost::function<void(ui32)> &callback) OVERRIDE; //pskill is gained primary skill, interface has to choose one of given skills and call callback with selection id
-	virtual void commanderGotLevel (const CCommanderInstance * commander, std::vector<ui32> skills, boost::function<void(ui32)> &callback) {}; //TODO
+	virtual void commanderGotLevel (const CCommanderInstance * commander, std::vector<ui32> skills, boost::function<void(ui32)> &callback) OVERRIDE; //TODO
 	virtual void showBlockingDialog(const std::string &text, const std::vector<Component> &components, ui32 askID, const int soundID, bool selection, bool cancel) OVERRIDE; //Show a dialog, player must take decision. If selection then he has to choose between one of given components, if cancel he is allowed to not choose. After making choice, CCallback::selectionMade should be called with number of selected component (1 - n) or 0 for cancel (if allowed) and askID.
 	virtual void showGarrisonDialog(const CArmedInstance *up, const CGHeroInstance *down, bool removableUnits, boost::function<void()> &onEnd) OVERRIDE; //all stacks operations between these objects become allowed, interface has to call onEnd when done
 	virtual void serialize(COSer<CSaveFile> &h, const int version) OVERRIDE; //saving