bigpigeon.us webpage WWII US > WWII Ground Forces > Ground Forces - Japan, © 2023 by Robert A. Christiansen, updated by RAC 11 Jan 2023.
​This webpage supports Big Pigeon's WWII-Japan module, and is not yet complete.
==> South & SW Pacific, 1942-44.

Southwest & South Pacific, New Guinea & Solomon Islands, 1942-44.
6th Army (Krueger).
  • I Army Corps – New Guinea (Eichelberger).
  • XI Army Corps – from Mar 1944, New Guinea (Hall).
under Navy control:
  • XIV Army Corps – Dec 1942+, Solomons (Patch/Griswold).

==> North Pacific, 1943.
  • 7th Infantry Division, Attu (Brown)

==> Central Pacific, 1943-44.

​Gilbert Islands, 1943, V USMC Amphibious Corps. (Holland Smith)
  • 2nd Marine Division, Tarawa
  • 27th Inf. Division, Makin (Ralph Smith)

Marshall Islands, 1943-44.
to be added.

​Saipan, Mariana Islands, 1944, V USMC Amphibious Corps. (Holland Smith)
  • 2nd Marine Division
  • 4th Marine Division
  • 27th Inf. Division (Ralph Smith)
Guam, Mariana Islands, 1944, III USMC Amphibious Corps. (Geiger)
  • 3rd Marine Division
  • 1st Provisional Marine Brigade
  • 77th Inf. Division (Bruce)
Tinian, Mariana Islands, 1944, V USMC Amphibious Corps. (Holland Smith)
  • 4th Marine Division
  • 2nd Marine Division
  • 147th Inf. Regiment.

​Palau Islands, 1944, III USMC Amphibious Corps. (Holland Smith)
  • 1st Marine Division, Pelelieu (Rupertus)
  • 81st Inf. Division, Pelelieu & Angaur (Mueller)

==> The Philippines Liberated.

Army & Corps Organization, Philippines, 1944-45.
6th Army (Krueger) (8th Army assumed responsibility 1 Jul 1945.)
  • I Army Corps –Luzon (Swift).
  • X Army Corps – Leyte, southern Philippines (Sibert).
  • XIV Army Corps – Luzon (Griswold).
  • XXIV Army Corps – Leyte (Hodge). (after Leyte, transferred to Tenth Army for Battle of Okinawa)
8th Army (Eichelberger)
  • XI Army Corps – Luzon, southern Philippines (Hall)
  • XIV Army Corps – Luzon (Griswold).
Leyte, 1944-45, 6th Army (Krueger)  --> 26 Dec 1944, 8th Army (Eichelberger).
X Army Corps -->26 Dec 1944 8th Army (Sibert).
  • 24th Inf. Division.
  • 32nd Inf. Division.
  • 1st Cavalry Division.
  • 112th RCT.
XXIV Army Corps (Hodge).
  • 7th Inf. Division.
  • 77th Inf. Division.
  • 96th Inf. Division.
  • 11th Airborne Division.
Luzon Campaign, 1945, 6th Army, 9 Jan 1945 (Krueger) --> 1 Jul 1945, 8th Army (Eichelberger).
I Army Corps – (Swift).
  • 6th Inf. Division.
  • 25th Inf. Division.
  • 32nd Inf. Division.
  • 33rd Inf. Division.
  • 37th Inf. Division.
  • 43rd Inf. Division.
  • 158th RCT.
XIV Army Corps, until 1 Jul 1945, (Griswold).
8th Army (Eichelberger)
XI Army Corps (Hall)
XIV Army Corps, from 1 Jul ‘45 (Griswold).
Southern Philippines Campaign, 27 Feb - 4 Jul 1945, 8th Army (Eichelberger).
X Army Corps, Mindanao, 17 Apr 1945 – 30 Jun 1945 (Sibert).
  • 24th Inf. Division.
  • 31st Inf. Division.
  • 162nd RCT 
  • 163rd RCT (from 41st Inf. Div.)
  • 108th RCT (from 40th Inf. Div.)
XI Army Corps (Hall) (some units also served on Luzon)
  • 23rd Inf. Division (a.k.a. Americal Division)
  • 31st Inf. Division
  • 41st Inf. Division
  • 93rd Inf. Division (African-American)
  • 503rd Parachute Infantry Regiment
  • 38th Inf. Division

==> Iwo Jima & Okinawa.

Iwo Jima, 1945, V USMC Amphibious Corps (Holland Smith & Schmidt).
  • 3rd Marine Division
  • 4th Marine Division
  • 5th Marine Division
  • 147th Inf. Regiment

Ryukus Campaign, Okinawa, 26 Mar - 2 Jul 1945, 10th Army (Buckner/Geiger/Stilwell).
XXIV Army Corps (Hodge)
  • 7th Infantry Division
  • 27th Infantry Division
  • 77th Infantry Division
  • 96th Infantry Division
III USMC Amphibious Corps (Geiger)
  • 1st Marine Division
  • 2nd Marine Division
  • 7th Marine Division