The A7V is the German heavy tank. After it's first single appearance in Gheluvelt Chateau it will often appear in large numbers from war factories. It is armed with a powerful cannon and will destroy most turrets in only a couple shots.
Player Controlled A7Vs appear in the German Campaign and are simply re-skins of the Whippet Tank. As such, they are armed with a front mounted cannon and side mounted gas dispensers.
The A7V was the only German tank to see combat in the First World War. It was produced in smaller numbers than any other Great War tank, with only around 21 (including variants) completed.