What do you mean by playing cards on American soldiers' helmets during World War II?

The four patterns on the helmet represent the special symbol of 10 1 airborne troops. 10 1 airborne troops have four airborne troops: 50 1, 502, 506 and 327. These four colors represent them respectively. And under these four colors, there is a small white dot. If this white dot is in 12, it represents the regimental headquarters; If it is at 3 o'clock, it represents a battalion; The 6 o'clock position represents the second battalion; The 9 o'clock position is the representative of the third battalion. These colors and white dots are nothing more than to help paratroopers find their troops more quickly after landing and prevent chaos. The square represents 50 1 airborne regiment, the red heart represents 502 airborne infantry regiment, the white peach represents 506 airborne regiment, and the plum blossom represents 327 gliding airborne regiment.