USMC units in Vietnam War

III Amphibious (to 1966 Expeditionary) Force

III Force Headquarters

1^st Marine Division

      Headquarters Battalion

      1^st, 5^th, 7^th Marine Regiments

      11^th Marine Regiment

      1^st Reconnaissance Battalion

      1^st Force Recon Company

      1^st Tank Battalion

      1^st Amphibious Tractor Battalion

      1^st Antitank Battalion

      1^st Engineer Battalion

      1^st Motor Transport Battalion

      7^th Motor Transport Battalion

     11^th Motor Transport Battalion

     1^st Medical Battalion

     1^st Shore Party Battalion

3^rd Marine Division

      Headquarters Battalion

      3^rd, 4^th, 9^th Marine Regiments

      12^th Marine Regiment

      3^rd Reconnaissance Battalion

      3^rd Force Recon Company

      3^rd Tank Battalion

      3^rd Amphibious Tractor Battalion

      3^rd Antitank Battalion

      3^rd Engineer Battalion

      11^th Engineer Battalion

      3^rd Motor Transport Battalion

      9^th Motor Transport Battalion

      3^rd Medacal Battalion

      3^rd Shore Party Battalion

5^th Marine Division

    26^th , 27^th Marine Regiments

   1^st Marine Aircraft Wing

      Headquarters squadron

      Marine Aircraft Group 11 (fixed-wing – attack)

      Marine Aircraft Group 12 (fixed-wing – attack)

      Marine Aircraft Group 13 (fixed-wing – fighter)

      Marine Aircraft Group 15 (fixed-wing – fighter)

      Marine Aircraft Group 16 (helicopter)

      Marine Aircraft Group 36 (helicopter)

      Marine Wing Support Group 17

      Marine Air Control Group 18

      Provisional Marine Aircraft Group 39 (helicopter)

Force Logistics Command

      Headquarters

      Maintenance Battalion

      Supply Battalion

      1^st Military Police Battalion

      1^st Radio Battalion

      5^th Communications Battalion

      7^th Engineer Battalion

      9^th Engineer Battalion

      3^rd, 9^th Marine Amphibious Brigades

   Special Landing Force – Seventh Fleet, to 1970, then 31^st a 33^rd Marine Amphibious Units