How many times does new Mongol armies spawn?

I am playing as russia and because i wanted to fight the mongols.

So i cheated a little so i could field massive armies.

I have seen them spawned three times

I have also figured out that throwing my armies against the mongols headon attacking is a recipt for disaster and is only useful for when you place 3-4 full stacks around one loonly mongolarmy and destroy that on autocalc.

The best way to win battles is to stay defensive and use the terrain, have destroyed 4 mongol armies with the use of militiaarmies only.

Place them on rivercrossing, have 5 units of spearmen and the rest archers.

Then have the mongols cross and hope the spearmen hold long enough to route the mongolarmy.

I am playing on easy/easy since i want victories:D

But now i want to finish of the Mongols and use my mighty armies to storm the rest of the world.