Amish man with summer hat - Ordnung rules state males are to wear hats when outside. Black is for the winter, straw color is for the warmer months. Amish are prohibited from wearing jewelry, not even wedding rings can be worn. Other symbols (beards for men, and black bonnets for women) are used, in lieu of rings, to represent marital status.
The United States Army Special Forces, known as the Green Berets because of their distinctive service headgear, are a special operations force tasked with five primary missions: unconventional warfare, foreign internal defense, special reconnaissance, direct action, and counter-terrorism.