Here is a way into it. These are casualities from the NAG 1965-1972

Link:
http://www.mrfa.org/Individual.Units.htm

Naval Advisory Group - Vietnam

03/01/65 - Harold D. Meyerkord, LT, St Louis, MO. - 1105 - RAG-23 -
Duc Tong * Navy Cross *

04/05/65 - William M. Barschow, LT, Bay Village, OH. - 1105 - 25th VN RAG

07/09/65 - William L. Brown, LT, Ypsilanti, MI. - 1100 - RAG 15 - Chu Lai

07/09/65 - Leon C. Stein, BM1, Reading, PA. - RAG-15 - Chu Lai

09/30/65 - Raymond Ellis, LT, Gettysburg, PA. - 1107 - RAG-27 - My Tho

03/25/66 - Philip O. Robinson, LTJG, Sheridan, WY. - 1105 - CG-16 -Quang Ngai

07/04/66 - Gullermo T. Bonillas, SK1, Tucson, AZ. - Saigon

10/16/66 - Albert G. Hallowell, LT, Highland Park, MI. - 6802 - Kien Hoa

10/26/66 - Ronald G. Wolfe, LT, Spokane, WA. - 1105 - Vung Tau

01/25/67 - Frederick A. Sims, BM1, Memphis, TN. - MLMS-16 - Saigon

04/03/67 - John Chapman, LT, Washington, IN. - 1100 - NAT-143 CG-16 -Quang Ngai

08/07/67 - William C. Fitzgerald, LT, Worcester, VT. - 1100 - CG-16 -
Quang Ngai * Navy Cross *

01/22/69 - Arden L. Krukow, MM2, Spencer, IA. - NAT-159 - COS FLOT-IV (PCF) - Rach Gia

03/13/69 - George R. Levesque, RMC, Quincy, MA. - CG-36 - Long Binh

05/20/69 - Douglas D. Vaughan, LTJG, Arlington Heights, IL. - 1100 - CG-16 - Quang Ngai - WIA 04/22/69

06/24/69 - Delbert E. Weber, GMG1, Lakeland, FL. - RAID-71

07/13/69 - Roger G. Bove, LT, Arlington, VA. - CH-13 - Cau Hai Bay

09/07/69 - James W. Sampers, IC1, Storm Lake, IA. - RPG-51 - Cat Lai

10/29/69 - Steven S. Mac Vean, LT, Hohokus, NJ. - 1100 - CG-36 - Soc Trang

10/29/69 - Russell Lecompte, SK1, Caloocany, PI. - CG-36 - Soc Trang

11/15/69 - John G. Graf, LCDR, Glendale, CA. - 6632 - OVIC - Tra Vinh City * MIA *

12/04/69 - Don E. Stevenson, BM1, New Orleans, LA. - NAT-159 - COS FLOT-IV PCF - Nam Cam

06/07/70 - Leonard C. Warwick, EN3, Polk, NE. - RPG-59 PBR-708

06/26/70 - William J. Cariveau, GMG2, Santa Maria, CA. - RPG-55

10/06/70 - Edward W. Withee, GMG1, Madison, ME. - RPG-62 PBR-36

10/20/70 - Thomas S. McCarry, GMG3 Springville, TN. - RPG-62 -Song Ong Doc

10/30/70 - Larry E. Hendrick, GMG1, Bluefield, WV. - NAT-143 PCF - Quang Ngai

10/30/70 - John E. Winters, EN1, Liberal, EN1, KS. - NAT-143 PCF - Quang Ngai

12/07/70 - Paul Colwell, BMC, Toulouse, KY. - RPG-58 - Rach Gia

01/07/71 - William C. Vasey, LT, Doylestown, PA. - RAID-73 ATC 1258

01/07/71 - Robert L. Paynter, BM2, Jerseyville, IL. - RAID-73 ATC 1258

01/21/71 - Samuel H. Barnett, GMG1, Washington, PA. - NAG-23 4th Riverine

02/05/71 - Clifton C. Newcomb, BM1, Brownfield, TX. - RPG-52 - WIA 02/02/71

04/05/71 - Karl R. Berbert, SM2, Sacramento, CA. - River Transport Escort Div-81

07/27/71 - Clifford F. Dowling, EN1, Portland, OR. - NAT-211 ATC

09/21/71 - Dudley F. Bradberry, BMCM, Kilgore, TX. - Saigon

05/15/72 - Ralph P. Dupont Jr., LT, Albany, NY. 1100 CG-21 - Quin Nhon

06/20/72 - Earl W. Frederickson, HT2, Shafer, MN. - MACV - Saigon - WIA 6/13/72

12/01/72 - Richard E. Brunderette Jr., CE1, Graniteville, MA. - Vung Tau

... and this gives you quite a thorough narrative of how NAG fitted in with the general MACV > MAAG-VN structure in place prior to the official start date of the war.

http://www.history.army.mil/books/Vietnam/...ontrol/ch02.htm
----------------------------------
(Excerpt)

"The question of establishing a unified military command in South Vietnam was first raised in October 1961. After President Kennedy had bolstered the U.S. commitment in May and again in October, in terms of both personnel and funds, the Military Assistance Advisory Group reorganized to meet the increased demand for field advisers to the South Vietnamese armed forces. General Taylor's mission to Vietnam in October revealed that these measures were inadequate for dealing with the Communist insurgency; therefore, in mid-November the President decided that the United States would assume a growing operational support role in addition to the existing advisory, training, and logistical missions. This decision marked the beginning of a new phase in U.S. support of the South Vietnamese government and its armed forces.

Consequently, the U.S. command structure in Vietnam, which had become overextended even before the new requirements had been established in the President's program, had to be reorganized. In mid-November Secretary of Defense Robert S. McNamara charged the joint Chiefs of Staff with this task. The new command was to be named the U.S. Military Assistance Command, Vietnam (USMACV).

At the time, the Military Assistance Advisory Group was the only U.S. military headquarters in South Vietnam. A joint organization, it contained an Army, Navy, and Air Force section, each responsible for advising its counterpart in the Vietnamese armed forces and for assisting the chief of the advisory group in administering the Military Assistance Program. Logistical and administrative support of the Military Assistance Advisory Group was provided through service channels. The chief of the advisory group, General McGarr, however, exercised operational control over all U.S. Army units. For their logistical support, however, the units depended on Lieutenant General Paul W. Caraway, Commanding General, U.S. Army, Ryukyu Islands (USARYIS), on Okinawa..."

Thanks Bluehawk. Just great history.