At the beginning of 1968, USMC units at Da Nang AB included VMCJ-1, VMF (AW)-235, VMF (AW)-242 and VMFA-122. During the Tet Offensive together with other attacks on US and ARVN facilities in the Da Nang area, on the night of 29 January the Vietcong fired rockets at the base and then at 02:30 on 30 January they launched a sapper and mortar attack on the south of the base killing 4 Marines. At 03:30 a renewed rocket attack on the base began with 55 122mm rockets hitting within 20 minutes killing 3 Marines and wounding 11 and destroying 5 aircraft and damaging a further 14.