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Military History/Deciphering Acronyms from Father's Service Records

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Question
Good afternoon, Mr. Leepson.

I recently found a note written to me by my father (but never given to me) asking me to help him with his project for posterity. My father is in the final stages of dementia and I'm cramming to finish his project before he passes. Iíve deciphered most of his military career, except for this:

2/3/1963   LOG ADV TACT AREA SEC. II CORPS (CI)   MAAG (9787) VIETNAM
4/22/1963   LOG ADV TACT AREA SEC. II CORPS (CI)   MAAG VIETNAM
12/17/1963   CASUAL   ENROUTE TO CONUS
2/3/1964   CO DET B-7 (CINSGCY) SDOPER DIV USASWC   CO C 7TH SFG (ABN) 1ST SF FTBRAGG NC
3/18/1964   CO DET B-7 (CINSGCY)   CO C 7TH SFG (ABN) 1ST SF FTBRAGG NC
4/1/1964   CO DET B-7 (CINSGCY)   CO C 7TH SFG (ABN) 1ST SF FTBRAGG NC
4/23/1964   INF UNIT COMDR   HQ 7TH SFG (ABN)
4/24/1964   STU OFF USASWS, STAFF OFF (33-G-F7)   CO C 7TH SFG (ABN) 1ST SF FTBRAGG NC
5/23/1964   STU OFF USASWS, STAFF OFF (33-G-F3)   CO C 7TH SFG (ABN) 1ST SF FTBRAGG NC
7/18/1964   SP FORCES   USASWS
7/19/1964   CO DET B-7 (CINSGCY)   CO C 7TH SFG (ABN) 1ST SF FTBRAGG NC
8/10/1964   CO DET C-4 (CINSGCY)   CO D 7TH SFG (ABN) 1ST ST FTBRAGG NC
11/18/1964   XO DET C-4 (CINSGCY)   CO D 7TH SFG (ABN) 1ST ST FTBRAGG NC
1/17/1965   CO DET C-4 (CINSGCY)   CO D 7TH SFG (ABN) 1ST ST FTBRAGG NC
4/10/1965   XO DET C-4 (CINSGCY)   CO D 7TH SFG (ABN) 1ST ST FTBRAGG NC
4/21/1965   CO DET B-12 (CINSGCY)   CO D 7TH SFG (ABN) 1ST ST FTBRAGG NC
5/17/1965   CO (CINSGCY) REAR DET   CO E 7TH SFG (ABN) 1ST SF FTBRAGG NC
5/22/1965   XO DET C-5 (CINSGCY)   CO D 7TH SFG (ABN) 1ST ST FTBRAGG NC

Could you help me translate this into full words? I just need a summary of what all this means to give an idea of what his role was during this time.

Gratefully,
Gwen Ford

Answer
The first two entries describe your father's two units in Vietnam, where  he served in the war's very early years, from Feb 3, 1963 to December 17, 1963. Looks like he was with two MAAG units (Military Assistance Advisory Group), which worked as advisers with the South Vietnamese Army. The military divided South Vietnam into four Corps (I,II,III and IV). II Corps was in central South Vietnam.

CASUAL   ENROUTE TO CONUS means he was on leave returning home to the Continental United States (CONUS)

The other items are his units he served in after he returned from. Looks like he was with several units of the 7th Special Forces Group (7th FSG )at Fort Bragg, the headquarters of the U.S. Army Special Forces (Green Berets). All the SF groups also were Airborne (meaning the men had to complete jump school), hence "ABN," 1st SF is part of the 7th SF designation.

CINSGCY is "counterinsurgency"
CO is Commanding Officer
XO is Executive Officer, the no. 2 man under the CO

DET is "detachment," the numbered name of his actual unit.

B-12, B-7, C-4, B-12, C-5 are the names of his units, called detachments in SF terminology

USASWS is the Army's Special Warfare School (the training center) at Ft. Bragg

STAFF OFF is Staff Officer.

Sorry, but I don't know what (33-G-F7)   is

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Marc Leepson

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I can answer most questions dealing with all aspects of U.S. military history. My expertise is the Vietnam War. I also have written extensively about the U.S. Civil War, World War II, World War I, The Philippine War, and the American Revolution. My books include a concise biography of the Marquis de Lafayette, the history of the American Flag, and the post-Jefferson history of Monticello, and therefore know a great deal about those specific subjects. I specialize in writing about matters of strategy--not tactics. And I also am interested in personalities. I have very little knowledge about ordnance or the value of old military memorabilia. Nor do I know a lot about uniforms and insignia--except about the Vietnam War. To repeat: I have no expertise in assessing the value of ordnance or uniforms or any type of military equipment. And my knowledge about military uniforms is only limited to those of the Vietnam War era. If you have questions on these topics, I recommend contacting an antiques dealer in your area who specializes in military uniforms, ordnance, etc.

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