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

U.S. Navy doctors and corpsmen administer to wounded Marines at an Iwo Jima first aid station, 20 February 1945.
Navy Chaplain Lieutenant (Junior Grade) John H. Galbreath (right center) is kneeling beside a man who has severe flash burns, received in an artillery battery fifty yards or so away.

Marine aid on Iwo Jima

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