Battle Tactics
Use Spearmen/pikemen against Enemy Cavlary.
Use Siege units to destroy enemy Buildings quicker (The Scorpians Won't Work).
Put Ranged units on the mountains,This gives them more defence and a better range.
Horses should attack on plains and camels should attack on desert because they both get a attack bonus.
Build Towers so your buildings get more defence.
These are very useful.
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