Green beret

The green beret was the official headdress of the British Commandos, a special-forces unit active during World War II. It is still worn by members of the Royal Marines after passing the Commando Course,^{[clarification needed]} and personnel from other units of the Royal Navy, Army and RAF who serve within 3 Commando Brigade and who have passed the All Arms Commando Course.

There are certain other military organizations that also wear the green beret because they have regimental or unit histories that have a connection with the British Commandos. These include the Australian, French and Dutch commandos. It is the norm in the armed forces of the Commonwealth Nations, where most regiments wear headdresses and cap badges which reflect regimental history and traditions.