The battlefields are littered with many places for enemy units to hide. With the use of line of sight knowing the angles can be a big help. You begin the battle by placing your units within the designated deployment area. A unit typically consists of 5 elements for infantry or 3 for armor units. As long as a unit is not totally wiped out in a battle, their numbers can be replenished at the cost of resources.
Experience helps with hit percentage so losing an experienced unit can be costly.
One thing to note when you are deploying your units are the objective markers, noted by a rotating disc hovering above the ground. To gain a victory in battle the easiest way is to destroy everything in sight. Actual victory however is determined by points. Each unit in the battle has a certain number of points added to the score. Each turn you hold a victory objective 25 points are subtracted from the opponent's score.