I selected the Turks and gave myself 1m Fl , gave myself iron in every province I controlled after a couple of turns. Built a MA and +4 Armor, +4 sword in every province.

This allowed me to build JHI, JI and JA in every province, with the above stats.

After a time, I had about 10 stacks of (5 JHI, 5 JI and 5 JA + 1 Ghulam Bodyguard General)

I then went into the attack, with what I thought was a strong stack (as above) against a Horde Cavalry Stack. Playing out on the battlefield, I lost a small number of JHI, JI and JA (about 100 men) and completely decimated the Cavalary stacks (1000 horses)

I did take quite a beating, so I have learned that even with the best troops, and maximum improvements, they can still be beaten. People say Valor is the most important stat as +1 valor is equal to +1 armor/+1 weapon I can now believe this.

Therefore, I believe, There is no substitute for battle hardened experience. I can imagine once I move my stacks across Europe, their experience / valor will increase, making these troops almost invincible.

NOTE: I do not recommend cheats, unless you want to test something, as it will really spoil the game.