Washington (CNN)An infantry battalion at Camp Lejeune in North Carolina received three historic additions Thursday — the first women infantry Marines.

The three women will serve in the 1st Battalion, 8th Marine Regiment, with specializations as rifleman, machine gun and mortar, according to 1st Lt. John McCombs, a Marines spokesman.
The identities of the women are not being released at this time to allow them to get acclimated to their unit, McCombs said. The unit already has three females in leadership roles and they will be able to help with the transition, he noted.