Blocking

This is a more advanced strategy, known as blocking or meat shielding. Basically you bring several troop types you don't use as kamikaze units. 
Here's how it goes. As enemy approaches, let's say inf in this instance, you use your kamikazes to slow their forward movement. Your cats are sitting way back on the field and the inf are getting closer and closer. You can't kill them all in time before they are too close so you use your blockers to hold them for another round. If I'm using inf and cats to farm forts then I would bring 1 cav and 1 arc. On round 8 or 9 when the enemy is super close, advance just the cav. They run up and halt the inf. If I need 1 more round then I'll advance my 1 arc. If all else fails I would have two options. Call out of the battle or advance my inf. The main goal is to not lose your cats. If I advanced my inf and they lost then I would have no choice but to call out of the battle. Cats in melee combat are pitifully useless and losing them hinders your ability to farm. The technique gives you two more rounds to get through and is very cheap to use. You can practice on low level forts or even oases. It's extremely useful. It can change the tide of battle against players also. Learn this well :)

Good luck team, 
Kad