Takes me back a year or two. In my youth (1950’s) I drew pictures of soldiers firing on hills filled with caves similar to the conflicts that happened on Iwa Jima and other Islands in the Pacific.
As I look back, I have no Idea were these images came from, we didn’t have a TV or anything like that.
Although my father was in the Army, he served in the European theater.
Perhaps from comic books?
I was never a comic book junkie but had some friends who were and I did read the Sunday morning comics in the newspaper.