You must agree that communication-system between HQ and tanks/commander to commander at Front line, was very poor,comparing todays'.You also admit that such communication wasn't rare even. A good number of stuffs are available for air and navy communication systems;the same relatively scarce,particularly for the TANKS .... of War 2 .. !! Was not it important then? How was the actual scenario in the battlefield [obviously I'm not asking for Flag/Hand signals]for the internal [presence of motor/gun noise] and external ? How HQ call to a commander/How a commander communicate another? Or at lest what type of Radio been used [in general,because it varied from model to model/countries etc...]Was it only fixed two-ways or some other types of ?? ........ any kind information ??