American and Japanese units based at Clark Field
Defense of Philippines 1941, Japanese Occupation January 1942–January 1945 and Liberation January 1945

American units based at Clark Field (Defense of Philippines 1941)
4th Composite Group (4th CG)
24th PG, 17th PS (P-40E) Nichols arrives December 9, 1941–Jan 1, 1942 departs Mariveles
24th PG, 20th PS (P-40E) Nichols arrives December 9 , 1941
19th BG, HQ September 1941 - December 24, 1941 departs Batchelor
19th BG, 28th BS (B-17) September 1941 - December 24, 1941 departs Batchelor
19th BG 28th BS (ground echelon) September 1941 - December 24, 1941 departs Bataan
19th BG, 93rd BS (B-17) September 1941–December 19, 1941 departs Batchelor
19th BG, 93rd BS (ground echelon) September - December 1941 departs Bataan
19th BG, 30th BS (B-17) ?–December 20, 1941 departs Batchelor
19th BG, 30th BS (ground echelon) ? - December 20, 1941 departs Bataan
2nd Observation Squadron (O-19, O-46)
7th BG, 14th BS (B-17) arrives September 16, 1941–January 1, 1942 departs Bugo, Mindanao
7th BG, 14th BS (ground echelon) arrives September 1941–December 24, 1941 departs Bataan

Japanese units based at Clark Field (Japanese Occupation January 1942–January 1945)
Imperial Japanese Navy (IJN)
201 Kokutai (N1K2 George also Mabalacat)
701 Kokutai (B6N2) October 1944
761 Kokutai (G4M) 1945
762 Kokutai (G4Ms, P1Y1, N1K1-J) reinforced in 1945
752 Kokutai (G4M) reinforced in 1945
901 Kokutai (G3M) 1945
Japanese Army Air Force (JAAF)
60th Sentai (Ki-21) from Saigon
208th Sentai (Ki-48) 1945
26th Sentai (Ki-43) 1945
15th Sentai (Ki-46) 1945
No.1 Yasen Hojyu Hikotai (Special Operations / Composite Group)

American units based at Clark Field (Liberation January 1945)
(USAAF)
475th FG, 432nd FS (P-38s) Dulag February 27 - April 20, 1945 departs Lingayen
475th FG, 431st, 433rd FS (P-38s) Dulag Feb 28 - April 20, 1945 departs Lingayen
5th Bomber Command Mindoro March 1945 - Aug 1, 1945 departs Okinawa
5th Fighter Command Mindoro March 1945 - Aug 1, 1945 departs Okinawa
22nd BG, 33rd BS (B-24s) Samar March 12, 1945 - Aug 15, 1945 departs Okinawa
22nd BG 408th BS (B-24s) Samar March 12 - Aug 21, 1945 departs Okinawa
22nd BG 2nd BS, 22nd BS (B-24s) Samar March 14 - Aug 14, 1945 departs Okinawa
2nd BG HQ, 19th BS (B-24s) Samar March 15, 1945
43rd BG, 403rd BS (B-24s) Tacloban March 15 - July 22, 1945 departs Ie Shima
43rd BG HQ, 65th BS (B-24s) Tacloban March 16 - July 24, 1945 departs Ie Shima
317th TCG HQ (C-47s) Leyte March 17 - Aug 24, 1945 to Okinawa
43rd BG, 63rd BS (B-24s) Tacloban arrives March 19, 1945–July 25, 1945 departs Ie Shima
43rd BG, 64th BS (B-24s) Tacloban March 22 - July 26, 1945 departs Ie Shima
91st Photographic Wing Mindoro March 24, 1945 - July 30, 1945 departs Okinawa
317th TCG, 39th TCS (C-47s) Leyte March 29, 1945 - Aug 19, 1945 departs Okinawa
5th AF HQ Mindoro April 2, 1945 - July 31, 1945 departs Okinawa
35th FG HQ Lingayen April 3 - June 28, 1945 departs Okinawa
35th FG, 41st FS (P-51s) Lingayen April 20 - June 30, 1945 departs Yontan
35th FG, 39th FS (P-47, P-51s) Lingayen April 21 - June 30, 1945
5th FC, 421st NFS (P-38s, P-61s) San Marcelino April 26, 1945 - ?
6th PRG, 36th PRS (F-5s) Biak April 28, 1945 - July 26, 1945 departs Okinawa
6th PRG HQ Leyte May 1, 1945 - July 31, 1945 departs Okinawa
312th BG, 386th BS (B-32) USA May 24, 1945–May 31, 1945 departs Floridablanca
345th BG, 500th BS (B-25s) San Marcelino May 10 - July 27, 1945 departs Ie Shima
345th BG, 498th BS (B-25s) San Marcelino May 11 - July 20, 1945 departs Ie Shima
345th BG, 499th BS, 501st BS San Marcelino May 12, 1945–July 28, 1945 departs Ie Shima
6th PRG, 20th CMS (F-7s) Dulag May 17, 1945 - August 4, 1945 departs Okinawa
6th PRG, 8th PRS (F-5s) Dulag May 19, 1945 - Aug 12, 1945 departs Okinawa
311th Photo Wing, 6th PRG Zamboanga June 1 - Aug 2, 1945 departs Okinawa
433rd TCG 68th & 69th TCS (C-47) Tanauan June 1 - Aug 25, 1945 departs Iwo Jima
54th TCW Leyte June 1, 1945
85th Fighter Wing Leyte June 1, 1945
5th ERG, 6th ERS (OA-10) June 1945–July 1945 Okinawa
6th PRG, 25th PRS (F-5s) San Jose June 14, 1945–July 14, 1945 departs Okinawa
433rd TCG, 68th TCS (C-46s) Tanauan June 14, 1945
433rd TCG 70th TCS (C-46s) Tanauan June 28 - Aug 26, 1945 departs Iwo Jima
6th PRG, 26th PRS Lingayen July 22, 1945 - Augsust 6, 1945 departs Okinawa
433rd TCG 67th TCS (C-46s) ? - Aug 27, 1945 departs Iwo Jima
13th AF Bomber Command Morotai Aug 27, 1945 - ?
307th BG, 371st & 372nd BS (B-24s) Morotai arrives September 1, 1945
310th BW San Jose arrives August 23, 1945
1315th Engineer Construction
403rd TCG, 13th TCS (C-54) Dulag arrives January 7, 1946–June 15, 1946 departs Nichols
U.S. Navy (USN)
USN Fleet Air Wing 17 land based as of February 26, 1945
VPB-137 (PV-1 detachment) Tacloban arrives February 17, 1945

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