Knowledge is essential for quick advance in age and military power.
Metal, Timber and Food is essential for building Military units.
In any battle, the WORST mistake committed by all is having ONE of EVERYTHING. It always wise to have 3-4 barracks, 3-4 University and many metal and timber gathers.
Have 4 General in front and at the back of a group of troops while advancing is a wise move. You can make them invisible for a longer period of time. Also, mobile bombers should always be placed at the back of an advancing troops since they are vulneable to enemy attacks.
Soldiers with swords like the Samurai soldiers in Japan Nation and the horses-mounted units should always be positioned in front of arachers so as to prevent the enemy swords-armed units from reaching the archers. Your archer would be gone in no time if the enemy swords-armed soldiers reaches your archers.
One Trick for u guys: Never ever attacks if u are not very strong in military power. Cos, your enemy would retilated with great power if your small units would to be wiped out and could capture your cities without much resistance from u.
Please post your comments to my strategy so that i can better improve myself. Thanks everyone.