World War II tactics

1234567
Across
  1. 2. A flagship of bombardment Force E
  2. 4. A German tank that helped them in the war
  3. 5. A British single-seat fighter aircraft used by the Royal Air Force
  4. 7. A class of German diesel-electric Elektroboot submarines designed during the Second World War
Down
  1. 1. A German tank that took over the land
  2. 3. A the only British tank used throughout the Second World War
  3. 6. A the world's first operational jet fighter