The Great War Bomber and its later versions are quite vulnerable to enemy interceptors, so always use it in conjunction with other units capable of eliminating those.
You can specialize it in one of these tasks via promotions. Large and slow, carrying a heavy load of bombs, it is used solely to rain death on ground or naval units, or on enemy cities, and it is significantly better at it than fighter planes. The Great War Bomber is the first aerial attack unit in the game. Rebase Mode: Order the air unit to rebase to another city or a Carrier.
