To fulfill President Nixon's "Peace with Honor" and "Vietnamization" directives, the US forces in Vietnam began to be withdrawn. Major units left country and the units that stayed found the replacement stream almost cut off. The chart below shows the official departure dates of the major units. In fact the units were withdrawn from the field and stood down to prepare for departure sometimes as much as one month before they actually departed.

AUGUST 1969                9th INFANTRY Division, 1st and 2nd Brigades
NOVEMBER 1969         3d Marine Division
APRIL 1970                    1st INFANTRY Division
APRIL 1970                    4th INFANTRY Division, 3rd Brigade
SEPTEMBER 1970        9th INFANTRY Division, 3rd Brigade
OCTOBER 1970         199th INFANTRY BRIGADE
DECEMBER 1970       25th INFANTRY Division, 1st and 3rd Brigades
DECEMBER 1970         4th INFANTRY Division, 1st and 2nd Brigades
APRIL 1971                    1st Marine Division
APRIL 1971                  25th INFANTRY Division, 2nd Brigade
APRIL 1971                    1st Cavalry Division, 1st and 2nd Brigades
APRIL 1971                  11th Armored Cavalry Regiment
AUGUST 1971                1st Brigade 5th INFANTRY DIVISION
SEPTEMBER 1971   173rd Airborne Brigade
NOVEMBER 1971         AMERICAL DIVISION, 11th and 198th Brigades
JANUARY 1972         101st Airborne Division
JUNE 1972                      1st Cavalry Division, 3rd Brigade
JUNE 1972                      AMERICAL Division, 196th Brigade