They were 37MM cannon with Wolfram core anti-tank shells. This one has exhaust covers for night flying. Germany's most decorated serviceman, Heinz Ulrich Rudel flew the standard Ju87B/Ds and these Ju87Gs to glory over Russia, and he lost a leg doing it. He continued to fly after his leg was amputated. He died within the last 10 - 15 years or so.
Via Ernie Bond
The B-17 Flying Fortress was famous for its durability. This B-17, Hang the Expense, of the 100th Bomber Squadron of the USAAF rests in an English airfield after being severely damaged by flak over Ostend on an aborted mission to Frankfurt, Germany, 24 January 1944. The tail gunner, Roy Urick, was blown out - but survived and was taken prisoner. Pilot, Frank Valesh, and co-pilot ,John Booth, miraculously flew the badly damaged B-17 back to England and put down safely at Eastchurch.