Ayub's becoming the Commander-in-Chief of the Pakistan Army marked a change in the military tradition of preferring native Pakistanis; it ended the transitional role of British military officers. Although the Pakistani government announced the appointment of the navy's native commander in chief in 1951, it was Ayub Khan who helped Vice-Admiral M.S. Choudhri to be appointed as the first native navy commander in chief, also in 1953. The events surrounding Ayub's appointment set the precedent for a native general being promoted out of turn, ostensibly because he was the least ambitious of the generals in the line of promotion and the most loyal to civil government at that time. Ayub, alongside Admiral Choudhri, cancelled and disbanded the British military tradition in the navy and the army when the U.S. military's advisers were dispatched to the Pakistani military in 1955–57. British military traditions were only kept in the air force due to a British commander and major staff consisting of Royal Air Force officers.