Large scale combat deployments began when the 9th Marine Expeditionary Brigade was deployed in the Da Nang area from March 1965. When the III Marine Amphibious Force moved to Da Nang on 6 May 1965, its commanding general, Major General William R. Collins, USMC, was designated MACV's naval component commander. In May 1965, the Army's 173d Airborne Brigade from Okinawa arrived. In July 1965, in response to the growing size of U.S. Army forces in the country, United States Army Vietnam was established, and both the 2nd Brigade, 1st Infantry Division as well as the 1st Brigade, 101st Airborne Division, deployed from the United States. The brigade from the 101st Airborne Division was originally planned to replace the 173d Airborne Brigade but, with the need for additional combat forces, both brigades remained in Vietnam. Two months later, the 1st Cavalry Division (Airmobile), recently reorganized from an infantry formation, reported in country, and the remainder of the 1st Infantry Division arrived in October.