Born in 1923, Sledge died in 2001, aged 77, from stomach cancer. After the war he had come to terms with the trauma of killing and seeing his buddies (and enemies) killed by studying nature, both professionally and as a hobby. Ultimately this lead to his becoming a scientist with a doctorate, whose specialist area was helminthology... the study of parasitic worms! At least his hobby of ornithology wasn't quit as grim!
* United States Marine Corps... but I guess most folks reading this will probably already know this!?