Ever hear of the emergency lipstick airdrop?
In WWII, after making a number of perilous airdrops to a hotly contested combat area, a C-47 pilot was told he needed to make another drop. He thought this unfair but took off. His crew informed him that the package was only one small crate, and it contained nothing but lipstick.
The tired and angry pilot railed against people who thought they could put him and his crew in danger just for some treats to give to the local ladies, but he flew the mission and delivered the supplies.
When he got back he demanded to know why beauty supplies were so vital. They told him that lipstick was used by the medics to mark wounded troops on their foreheads for triage.