Green beret
The 10th Special Forces Group (Airborne) had many OSS World War II veterans in their ranks when it was formed in 1952. They began to unofficially wear a berets of varying colour while training. The color green became favored because it was reminiscent of the World War II British Commando-type beret. The 10th Special Forces Group (Airborne) deployed to Bad Tolz, Germany in September 1953. The remaining cadre at Fort Bragg formed the 77th Special Forces Group. Members of the 77th SFG began searching through their collections of berets and settled on the Rifle Green colour of the British Rifle Regiments (as opposed to the Lovat Green of the Commandos) from Captain Mike de la Pena's collection. Captain Frank Dallas had the new beret designed and produced in small numbers for the members of the Special Forces.
Charles Alvin Beckwith
Meanwhile, as the 7th SFG(A) operations officer, Beckwith went to work revolutionizing Green Beret training. Special Forces at the time focused on unconventional warfare, and especially foreign internal defense: i.e. training indigenous personnel in resistance activities. But Beckwith recognized that, "Before a Special Forces Green Beret soldier could become a good "un"conventional soldier, he'd first have to be a good conventional one... Because I had commanded rifle and weapons companies, I was appalled on arriving in Special Forces to find officers who had never commanded conventional units." Beckwith restructured 7th's training, basically rewriting the book on Army special operations training from the real-world lessons he had learned with the SAS. Beckwith also had learned that a symbol of excellence like a beret had to be earned. Officers were being assigned to Special Forces straight out of war college with no prior special ops experience and were given their Green Beret on arrival. The hard-nosed and practical training standards that Beckwith instituted would lend themselves to the birth of the modern Q-Course.