The 3rd Battalion 6th Marines was relieved by 1st Battalion 8th Marines on 10 May 1965. After moving into its new positions, 1/8 was directed to straighten the eastern boundary along Phase line CAIRO. The battalion also assumed the responsibility for providing security to the American Embassy. The final withdrawal of Marine units began on 2 June 1965. The 1st Battalion 8th Marines was relieved in place by the U.S. Army's 1st Battalion, 325th Airborne Infantry. 1/8 embarked on board the and the ship departed the area for Morehead City, North Carolina, arriving on 6 June. 1/8 suffered 4 Marines wounded in action (WIA) during the campaign.