37mm Gun fires against cave positions at Iwo Jima.
Obrigado-Overlord

Iwo Jima Battle

When advancing Marines reached this Japanese pill box on Iwo Jima, they found it in this condition, apparently demolished by the combined gunfire of U.S. Navy warships offshore and aerial bombardment. This picture was made during the week following the landing on Iwo Jima on February 19th.

Jap Pillbox Smashed by Iwo Bombardment

A wounded marine is given medical care in the midst of battle in February 1945