Headquarters Squadron 25

MAG-25 organized on 1 June 1942 at Camp Kearny, California, with VMJ-253 attached, and began arriving at Ewa, Hawaii, on 24 August.  It accompanied VMJ-253 to ​New Caledonia in September.  HqSq-25 formed the core of SCAT, which was activated in December 1942, its senior officer serving as SCAT commanding officer throughout the unit's existence.  The headquarters squadron remained at Tontouta until July 1944, when it moved to Bougainville.  In October 1945 it began relocating to China, ultimately based at Tsingtao.  MAG-25, including its headquarters squadron and attached service squadron, was deactivated on 31 May 1947.  The following commanding officers were all attached to HqSq-25:

SCAT Commanding Officers:

Lt.Col. Perry K. Smith, 2 December 1942 - 9 July 1943
Col. Wyman Fiske Marshall, 10 July - 23 December 1943
Col. Allen C. Koonce, 23 December 1943 - 3 July 1944*

MAG-25 Commanding Officers:

Lt.Col. Perry K. Smith, 1 June 1942 - 9 July 1943
Col. Wyman Fiske Marshall, 10 July - 23 December 1943
Col. Allen C. Koonce, 24 - 30 December 1943
Col. William A. Willis, 31 December 1943 - 27 July 1944
Col. Allen C. Koonce, 28 July 1944 - 12 February 1945
Col. Harold C. Major, 13 February - 1 July 1945
Col. William J. Fox, 2 July - 1 September 1945
Col. Elmore W. Seeds, 2 - 19 September 1945
Col. Herbert P. Becker, 20 September 1945 - 5 June 1946
Lt.Col. Gregory J. Weissenberger, 6 June - 2 July 1946
Lt.Col. Harry H. Bullock, 3 - 28 July 1946
Lt.Col. John S. Carter, 29 July - 1 December 1946
Lt.Col. Andrew B. Galatian, Jr., 10 December 1946 - 5 May 1947
Lt.Col. Louis B. Robertshaw, 6-26 May 1947
Lt.Col. Andrew B. Galatian, Jr., 27-31 May 1947

HqSq-25 Commanding Officers:

Maj. Leonard W. Ashwell, 1 June - 17 November 1942 
Capt. Dave J. Woodward, Jr., 18 November 1942 - 9 September 1943
Maj. Jonathan W. Dyer, 10 September 1943 - 14 January 1944
Capt. Thomas M. Heard, 15 January - 18 June 1944
Capt. Leroy M. James, 18 June - 21 October 1944 
Maj. Theodore E. Beal, 21 October - 8/9 November 1944 
Maj. Charles J. Prall, 9 November 1944 - 3 June 1945
Maj. Philip E. Sweeny, 4 June 1945 - 17 August 1945
Capt. Lawrence N. Laugen - 18 August 1945 - 13 February 1946
Maj. William P. Dukes, 14 February - 19 August 1946
Capt. Robert L. Conrad, 20 August - 20 September 1946
Capt. John E. Cosgriff, 21 September 1946 - 31 May 1947 

*Col. Koonce continued to command SCAT as Solomons Combat Air Transport Command from 3 July 1944 to the organization's final termination on 12 February 1945.

Based in part on information contained in History of Marine Corps Aviation in World War II by Robert Sherrod (Washington, DC: Combat Forces Press, 1951).