This is such a great thread.
I very much regret not getting my father to talk. He was in uniform only days before being recalled for the top secret electronics work he was doing. The only paper work I could find was his copy of the official secrets act. My Mother told me that he was designing & building RDF (Radio Direction Finding) equipment. When the other engineer could not work the hanger catwalks, he also installed them. Also early radar.
Dad's later work involved radio & television including pioneering color. I have found some of his patents on line but there is so much I will never know now. Not exactly the front lines but interesting none the less.
Russ