Archery is the most importantskill for fighting as your archery gives your troops greater range. If you have greater range than your enemy you will get a free shot in battle. They continue to march towards you until they get in range and can shoot. This gives your archers a chance to get in one or more free shots on your opponent! It can swing a fight in your favor as your first shot advantage might allow you to kill enough of the enemy that your smaller army will win the battle.
At certain levels barracks are more important than others.
Level 1 barracks make workers and warriors.
Level 2 barracks make scouts and pikemen.
Level 3 barracks make swordsmen.
Level 4 barracks make archers. ALL your barracks should be at least level 4 so they can make archers. Archers are the most important troop in the game.
Level 5 barracks are used for making cavalry.
Level 6 barracks are used for creating transporters.
Level 7 barracks are used for making cataphracts.
Level 8 barracks are useless. They make no new troops. So no need to have level 8 barracks unless you’re making level 9 or 10 barracks.
Level 9 barracks are used for making ballistas and battering rams.
Level 10 barracks require a michelangelo script. They can make catapults. Catapults also require a level 10 forge.
I usually make barracks up to level 4, level 6, or level 9. There is very little advantage in having barracks at levels 5, 7, or 8.
Archers are the best troop type in the game. Make LOTS of them.
To make archers you only need your barracks to be level 4. Make lots of level 4 barracks. You should have at least 10 level 4 barracks in EVERY city and it is entirely possible to build farm cities with 16 or more level 4 barracks pumping out thousands of archers at a time.
Later in the game you will be fighting with 50,000 or 100,000 archers!
Generally speaking when attacking a city you want to have at least 3x as many archers as that city has archer towers. PLUS you need to account for the archers and other troops if the gates are open.
For example. The enemy player has 1,000 archer towers, 1500 traps, 500 archers, and 2000 warriors.
That works out to be about 5,000 total defenses.
I’d suggest sending in at least 3x that amount. I’d prefer to send in at least 7500 archers and 7500 warriors. That should win pretty easily. 10,000 archers and 5000 warriors would probably win even easier.
There is an advanced Evony strategy that it is much better to win big rather than win a close fight. You might want to make a habit of sending 4x as many troops if you can.
You also might want to find out if the gates are opening before sending in your army, because you’d need a lot less troops!