Welcome to M L. And thanks for comments. It was getting to be quite around here. Guess politics was more interesting than our memories. ....but nice to know we can still remember.
Yes, those at home saved grease for various military reasons, but not for greasing bombs so they wouldn't infringe on another... and explode. I hung bombs on P-38's and neighbor to Bomb Squadrons, and those bombs would never explode that way, and only if armed and fell to activate the nose devise primer.
But mechanical things like motorized equipment had no self lubrication as today, and had to be manually greased, and heavily used to prevent oxidizing rust. Bill