You write so beautifully, thank you for linking me to this. I didn't recognize that the officer telling the men to stay and float was the same as the shell-shocked man in the Moonstone. I also didn't understand the "one week" "one day" "one hour" structure while I was watching. I shall have to watch again.

Have you seen 1917? Dunkirk reminded me a lot of that film, as you say they are about survival around the edges of a war.