By autumn, the 18th, 19th and 25th CBs had been transferred to the Corps as combat engineers. Each was attached to a composite engineer regiment, redesignated as 3rd Battalion: 17th Marine Regiment, 18th Marine Regiment, 19th Marine Regiment, and 20th Marine Regiment. The 18th and 19th CBs each claim to have been the first CBs authorized to wear standard USMC issue. Both received their military training and USMC duffle bag at MTC New River, NC. There is no record of how many CBs received USMC issue. It is known that the 31st, 43rd, 76th, 121st and 133rd NCBs received partial or complete issues.