The conditions for every battle are generated based on tables on the campaign sheet - these are influenced by momentum (winning/losing battles in the campaign) and attrition on either side. Losing units makes it more difficult for the player to get reinforcements, while Soviet unit quality will degrade as second-tier units are brought forward to relieve their battered forces. Based on performance, the player gets supply dice prior to each battle which can be used to call in replacements, get air support, or attach additional platoons from friendly forces. Loses can often be replaced, but the replacements will lack the experience your existing units build through surviving battles. Unit quality (a combination of experience, training, and morale) is a key factor providing bonuses in several different ways. 

Battles can place the player on the attack or in a defensive position, aiming to overcome numerically superior Soviet forces. The Soviets will use their mass to attempt to break through your lines, while the player must maneuver carefully to use (generally) superior units and clever tactics to win. Units operate at the platoon level, with losses tracked by each individual vehicle. Combat is D20-based, with attacks rolling to hit, then rolling to destroy, enemy vehicles. Dismounted infantry, following doctrine of the time, operate with their transport vehicles and provide bonuses to them while not suppressed. 

Battles resolve quickly, typically taking an hour or less. Despite the depth of tracking campaign progress and multiple individual platoons, progress is tracked on a single side of a sheet of paper for an entire campaign, and takes about five minutes after a battle to record.