The Art of Commanding

So if you can give me some Tips id really appreciate it.
Im going to Set up some Scenarios please let me know hw to command each accordingly.Battle is based on Max Techs/Stats.
Battle1******
30,000 Catapults Vs. 80,000 Cavalry
30,000 Infantry Vs. 20,000 Archers
1 Archer Vs. 1,000 Catapults
1 Cavalry Vs. 5,000 Infantry
Battle 2*******
25,000 Catapults VS. 35,000 Cavalry
10,000 Cavalry Vs. 80,000 Archers
5,000 Infantry Vs. 10 ,000 Infantry
5,000 Archers Vs. 1,000 Catapults
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What im really puzzled on is hw to use a Meatsuit?I have no idea hw to effectively Use it 100% to my advantage.Im use to holding everything on Forts thats about it for my commanding knowledge.I still dont know hw to even take advantage of Catapult falling back Vs. Cavs immunity.
