As war started the german troops were rated as the best equipped and most efficient in the world. But the early success of the Blitzkrieg shrouded a big weakness, especially for the airforce. During the entire WW2 germany was missing an effective bomb squadron. There were no four-engined airplaned that could have matched the B17 or Lancaster - and time for new developement was short. This error limited the strategic possibilites for germany at a very high cost.