Perhaps realistically, you're never exactly sure when your air strikes will come and you can't recall them if the situation changes, thus increasing the chance of friendly fire. For example, if you target a tank and a BF 109 gets assigned from the pool, you have no say in the matter. Officers and sometimes NCO's are very important in this game. If they are in the particular chain of command, they add their experience points to the hit points of the tanks, anti-tank guns, machine guns, or infantry. They also help undisrupt units that have been disrupted.
More experienced units have a better chance of becoming undisrupted quicker.
Westfront supports glider assaults, paratroops and inferior but ubiquitous Allied Sherman tanks. When using the highly recommended Fog of War option, no units can be seen unless they have moved or fired within sight of the enemy. Opportunity-fire can then be turned off to setup an excellent ambush shot into an enemy tank's vulnerable rear armor after he has passed by. You will also use anti-aircraft artillery, both against air strikes and for infantry support. This set-piece game supports both the blitzkrieg style of assault and the exigencies and realities of siege warfare, depending on the circumstances.