Military Pink was a Shade of Pink Used to Hide Naval Vessels
The purpose of camouflage is to blend in, which is its fundamental definition. Because jungles are often green, jungle camouflage is green. For similar reasons, desert camouflage is brown and beige. The exception to the generalization that camouflage should actually blend in with something natural is Mountbatten Pink.
Mountbatten Pink, named after navy captain Louis Mountbatten, is exactly what it sounds like: pink. It was created for British military vessels. Military ships were painted in Mountbatten Pink in an effort to blend in with the horizon by disappearing during sunrise and sunset. This was the time of day when German U-boats were most likely to begin an attack during the Second World War. The main issue with the color was that it wasn't really put to the test and wasn't really effective. This was especially obvious throughout the rest of the day, when the pink color was ineffective as camouflage.