I just played bit Omaha beach-type battle (US attack vs. German defend) june 1944 (from some reason today
) and I noticed that M4 Duplex Drive's are not allowed to fire during "swimming phase". I didn't got any to the shore to see if they can fire then... Well, I'm not expert about this type of tanks so I ask: were DD tanks really not able to fire anything before they reach beach sand?