My father served in New Guinea, enlisting after Pearl Harbor. He was a professional photographer, whose military service consisted of documenting potential sites for air strips deep in the jungles, occupied by the Japanese. I have multiple albums of photos he took during his time there, and a wealth of stories of the determination of the Japanese military. He spoke candidly about not expecting to return alive, and of the burden that was lifted after Hiroshima.
He had regrets that FDR had made race an issue in garnering support for the war effort. We were among the first patients of a Japanese American dentist from California who had been interned during war. Dad, who lost teeth as a result of his service, often said one of the great injustices of the era was that Dr. Higashida was not permitted to enlist in the US military and use his skills. In contrast to much of the public mood today, my father was truly color blind, adopting an Asian/American child (me), in an era when such things weren't done. He truly was part of the Greatest Generation.