Green beret
U.S. Special Forces wear the green beret as a distinction of excellence and uniqueness within the Army.
Black beret
The black beret is a type of headgear. It is commonly worn by paramilitaries and militaries around the world, particularly armored forces such as the British Army's Royal Tank Regiment (RTR), the Royal Canadian Armoured Corps (RCAC), and the Royal Australian Armoured Corps (RAAC). Notable non-armored military units to wear the black beret include the Russian Naval Infantry (and formerly Soviet) and Russian OMON units, the United States Air Force (USAF) Tactical Air Control Party (TACP), Philippine National Police-Special Action Force (PNP-SAF) members, and the Royal Canadian Navy ("navy blue"). It was also worn by the United Kingdom's Royal Observer Corps (ROC) with their Royal Air Force (RAF) uniform, Metropolitan Manila Development Authority (MMDA).
Black berets are also worn by navies. In some navies, the naval color called black is officially "very dark blue". The Dutch Navy and Marines wear dark navy blue berets; a silver anchor for the Navy and a gold or dark brown (field duty) anchor on a red background for the Marines. The Portuguese Marines and San Marco Regiment, the Marines of the Italian Navy also wear a dark blue beret. The Royal Norwegian Air Force also use a dark blue beret. Finnish Marine Infantry wear a dark blue beret with the Navy insignia.(Finnish Coastal Jaegers - marine commandos - part of the same Nylands Brigade, wear the green beret).