I attacked a three stack Mongol Spearmen army outside Antioch with a 16 stack army.... The full stack Mongol Army inside Antioch wanted some...
I had:
1 English King
3 Kwazithingymebob Cav Mercs
4 Longbowmen
2 Horse Archers Mercs
2 English Feudal Knights
2 Spearmen
2 Dismounted English Knights

Now the thing was to get rid of the Mongol Spearmen sharpish, which a total cav charge accomplished (Left, right and behind)
As this was going on The Huge horde was starting to walk on the Map. EEEK! From the behind left! "MOVE!" The King bellowed and pegged his army to the other side of the map, BUT left the Kwazi horses in the forest to his right...
With the army running for england to the other side of the field, they started to reform. "CTRL+6!" Came the order. Now the Mongols love those horse archers. As they sent them forward, The King met them with his.
"Let them shoot it out." Came the murmer from the King to the Knight next to him.
The spearmen were placed into their respective shiltrons port and starboard side of the dis eng knights and anxiously waited.
Mongols love Archers. They moved them infront of their infrantry. Cue Kwazi Cav from their now behind...
Archers start to peg it... where?? Towards the longbowmen. "Lovely."
Next they go for broke and now seeing that their archers are getting pummelled they send their cav into the melee.
George Smith (from Putney) Second row in the Spearmen screams "hold... Hold... HOLD!" WHAM! Cav now stopped... "Go dis Eng Knights with your 24 Attack!" BAM! SMASH! ARRGH!

Now the King, during this time has been circling their left flank with the 2 mounted Feudal Knights goes full pelt into what remains of their archers and through to the now fighting spearmen and dis eng knights... Smoke, Dust and Blood is every where....
The Kwazi guys now pick off the rest of the horse archers on the right. Now... "ARCHERS ATTACK!" Pressing the ALT key, they smash into what now remains of the Mongol Cav who now are stood still and being introduce to English Steel and Vengeful Anger. Like a rabid bunch of England Football Supporters the archers go at it with their hammers, hitting anything that doesn't have red or yellow cloth in the total chaos that is man and beast.

White flags are now appearing from the Mongols... "Had Enough??!!" Battle horns for the charge are sounding louder as the Mongol General is taken prisoner and their whole army now screams "To the hills!"

The Second Lt, now dripping in blood and sweat trots up to the now exhausted King who is looking at the carnage of broken flags, lances and men, "A day to remember, Sire."
"Yes it is.... yes it is."

The rest as you can imagine.... is history.