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Here you can find interesting informations about SEALs combat missions.
 
Section is divided to:
Combat Missions ST-2 Commanding Officers
Patrol Warning Order ST-2 Command Master Chiefs
SEAL Team Platoon in Country Dates SEALs and UDTs Detachments

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Combat Missions
The first SEALs arrived in Vietnam in 1962, initially at Danang, to create Mobile Training Teams or MTTs. Each team comprised between seven and 10 members, tasked with training and commanding the Biet Hai, the personnel of the commando units of the South Vietnamese coastal/naval force. The MTTs comprised elements from SEAL Team One and Two. The first SEAL combat detachment was the Golf detachment of SEAL Team One, and was based on the naval base of Nha Be, in the Gia Dinh province, south east of Saigon. Other major SEAL units were represented in Vietnam: Alpha, Bravo, Echo and Golf. The Golf detachment composed of SEAL Team one element operated in the Special Zone of the Rung Sat from Nha Be. The Alpha detachment from SEAL Team 2 was the sister unit of the Golf detachment and was based at Binh Thuy on the Bassac river. The Bravo detachment was composed of scattered elements controlling the South Vietnamese PRU (Provisional Reconnaissance Units) units. Finally, the Echo detachment, based at Da Nang and belonging to the SOG (Studies and Observation Group) operated under the orders of the MACV (Military Assistance Command Vietnam).

Well implanted in Vietnam, in the Mekong Delta and in the Rung Sat special zone near Saigon, the SEAL detachments had now evolved tactics, which worked satisfactorily and achieved good results. The major Tet offensive conduced by Hanoi's soldiers and the Vietcong of the South marked a turning point. This, however, did not affect the SEAL units which, for four years, carried on with their operations, but the American government which became persuaded that winning the war was impossible and that the only solution was the with drawl with the 'Vietnamisation' of the conflict. But before that, the year 1968 was a year of action for the SEALs who carried out hundreds of reconnaissance missions, ambushes and intelligence gathering on behalf of high command.

By 1970, during the 'Vietnamisation' of the operations, teams from the two SEAL Teams continued until 1972 to carry out reconnaissance missions and to search for allied prisoners of war. However, most of their missions were carried out as advisors with the South Vietnamese navy commandos who were trained by the SEALs. During the last year of their 'active' presence in Vietnam, the SEALs were entrusted with more delicate missions, revolving almost exclusively around the recovery of shot down American aircrews.

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Patrol Warning Order
Patrol Steps:
1. Study the mission
2. Plan the use of time
3. Study the terrain and the situation
4. Organize the patrol
5. Select the men, weapons and equipment
6. Issue the Warning Order*
7. Coordinate with other organizations
8. Make reconnaissance of the target area
9. Complete detailed plans
10. Issue Patrol Leader's Order
11. Supervise, inspect, and rehearse
12. Execute the mission
 
*A normal Patrol Warning Order consist of the following:
I. A brief statement of the situation, both enemy and friendly
The SEALs were told what was going on in the area, who else was holding operation, ora what may have led to the upcoming op.
II. The mission of the patrol
The who, what, where, when, and why of the op. This was primarily what the operation was going to be - a body snatch, patrol and ambush, raid, or whatever - who or what the target was, how long the mission would take, and when the op was coming down.
III. General Instructions
A. General and specific organization
This was a summary of what each part of the platoon or squad was going to do in support of the mission. Individual duties were specified here and assignments such as point man, automatic weapons man, and radio man were given out. Men assigned to special teams were told what they would be doing, such as prisoner handling, etc. The order would also outline the equipment; what it was, how much would be needed, how much was expected to be used on the mission, and who would prepare it.
B. Uniform and equipment common to all
What the unit would be wearing in terms of uniform, web gear, number of canteens, life vest, etc. Escape and evasion gear are listed, as well as any required civilian, camouflage, or deceptive clothing listed.
C. Weapons, ammunition, and equipment
This order included information on what each man would  carry in terms of ordnance; how the would be armed; how much ammunition they would carry, including extra ammunition for special weapons or demolitions; how many rations; grenades, including smoke grenades, how many and what colors; and any specialized equipment such as demolition gear, Claymore mines, radios, etc. Mission critical items, such as special detonators, signaling gear, or munitions would be doubled. This was also when the men would be told where to go to draw rations, water, weapons, ammunition, and other equipment.
D. Chain of command
Men were told who would take over an operation if the platoon or squad leader and their assistants were hit.
E. A time schedule
A general timetable of the operation, especially when the unit was to be ready, when transportation would arrive or be prepared to leave, and when any special issue was going to be made. Times for mustering up, test firing weapons, and any futher or specialized briefings would be given.
F. Time, place, uniform, and equipment for receiving the Patrol Leader's Order
In other words, when and where the men would receive the full details of the operation.
G. Time and places for inspections and rehearsals
IV. Specific instructions
A. To subordinate leaders
How the squad or fire team leaders would prepare their men or equipment if anything out of the ordinary were required.
B. To special purpose teams or key individuals
How the radio man might have to prepare special encryption equipment or how a prisoner handling group may have to secure more than one individual if multiple targets were expected on a snatch.

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SEAL Team Platoon in Country Dates - ST-2, Detachment Alfa (HQ Binh Thuy)
Platoon Squad Tour Dates in Vientam Locations
2 A, B 31 January 67 – 30 May 67 Binh Thuy, My Tho
3 A, B 31 January 67 – 26 June 67 Binh Thuy
4 A, B 30 May 67 – 24 October 67 My Tho
5 A, B 26 June 67 – 17 December 67 Binh Thuy
6 A, B 28 August 67 – 12 February 67 Vinh Long
7 A, B 24 October 67 – 22 April 68 My Tho
8 A, B 17 December 67 – 15 June 68 Binh Thuy, Chau Doc
9 A, B 12 February 68 – 25 August 68 Vinh Long, Binh Thuy
10 A, B 22 April 68 – 22 October 68 My Tho
3 A, B 15 June 68 – 11 December 68 Nha Be
4 A, B 12 August 68 – 12 February 69 Vinh Long
5 A, B 12 October 68 – 12 April 69 My Tho
6 A, B 12 December 68 – 12 June 69 Nha Be
7 A, B 12 February 69 – 12 August 69 Vinh Long
8 A, B 12 April 69 – 12 October 69 My Tho
9 A, B 12 June 69 – 12 December 69 Nha Be
10 A, B 12 August 69 – 12 February 70 Vinh Long
3 A, B 12 October 69 – 12 April 70 Ca Mau-Song Ong Donc
4 A, B 12 December 69 – 12 June 70 Binh Thuy, Nha Be
5 A, B 12 February 70 – 12 August 70 Nha Be, Dong Tam
6 A, B 12 April 70 – 12 October 70 Ca Mau
7 A, B 12 June 70 – 12 December Nha Be, FROGS-Ville, Quang Tri
8 A, B 12 August 70 – 12 February 71 Dong Tam
9 A, B 12 October 70 – 12 April 71 Ca Mau, Hai Yen
10 A, B 12 December 70 – 12 June 71 Vi Thanh

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ST-2 Commanding Officers
LT Roy Boehm (January 1962) CDR B.S. Williamson (June 1980 - June 1982)
LT John Callhan (January 1962 - July 1964) CDR R.T.P. Woolard (June 1982 - June 1984)
LCDR Thomas "N" Tarbox (July 1964 - August 1966) CDR Robert M. Reive (June 1984 - July 1986)
LT Joseph DiMartino (August 1966 - September 1966) CDR Ryan J. McCombie (July 1986 - Sep 1988)
LCDR William Farley (September 1966 - April 1968) CDR Norman J. Carley (September 1988 - Nov 1990)
LCDR Edward Lyon (April 1968 - April 1970) CDR Thomas R. Williams (Nov 1990 - Dec 1992)
LCDR John Ferruggiaro (April 1970 - August 1972) CDR Joseph Maguire (prosinec 1992 - August 1994)
LCDR Robert A. Gormly (September 1972 - July 1974 CDR Joseph Kernan (August 1994 - θerveenc 1996)
LCDR Richard Marcinko (July 1974 - July 1976) CDR David Morrison (July 1996 - November 1998)
LCDR Bruce Van Heertum (July 1976 - July 1978) CDR Willie T. Lovett (November 1998 - Nov 2000)
CDR Thomas N. Lawson (July 1978 - June 1980) CDR Scott P. Moore (November 2000 - present)

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ST-2 Command Master Chiefs
BMCM Rudolph E. Boesch (1962 - March 1988) BMCM C.W. Breining (September 1994 - March 1998)
BMCM Pierre R. Ponson (March 1988 - March 1990) BMCM Mark E. Courrier (March 1998 - May 2000)
AOCM Mike Boynton (March 1990 - June 1990) ITCM Timothy Loen (May 2000 - present)
ENCM John Kirby (June 1990 - September 1994)  

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SEALs and UDTs Detachments
UDT and SEAL Teams operated in detatachments, commonly called Det. where were place from their headquarters in Coronado or Little Creek. Dets were signed alphabetical by the phonetically of U.S. Navy alphabet. A was Alfa, B was Bravo etc. These Dets did not have standard number of platoon nembers but were regulated by the mission need. Det Gof was the biggest detachment of SEAL Teams in Vietnam War. It expanded from initial 3 officers and 15 enlisted (3/15) to six platoons with 13 officers. It was more than during creation of ST-1.
 
Number of SEAL personnel from January 1970
Unit Location Officer / Enlisted
NAVSPECWARGRUV Saigon 10 / 11
SEAL Det Sierra Cam Rahn Bay 1 / 7
SEAL Det Alfa Binh Thuy 1 / 2
5th platoon Dong Tam 2 / 12
6th platoon Ca Mau 2 / 11
7th platoon Nha Be 2 / 13
SEAL Det Golf Nam Can 1 / 3
Delta platoon (A Squad) Rach Soi 1 / 6
Delta platoon (B Squad) Kien Son 1 / 6
Echo platoon Nam Can 2 / 8
Foxtrot platoon Nam Can 2 / 12
Golf platoon Nam Can 2 / 11
Hotel platoon Sa Dec 2 / 11
Juliet platoon Long Phu 3 / 12
SEAL Det Echo Danang 0 / 3
 
MST-1 Danang 3 / 16
MST-2 Binh Thuy 1 / 11
MST-2, Det Alfa Sa Dec 1 / 8
MST-2, Det Bravo Nam Can 1 / 7
MST-2, Det Charlie Nam Can 1 / 11
MST-2, Det Delta Dong Tam 2 / 21
MST-2, Det Echo Rach Soi 1 / 8
MST-2, Det Foxtrot Ca Mau 1 / 7
MST-2, Det Golf Long Phu 1 / 7
BJU-1 TM-13 Binh Thuy 3 / 16
UDT Det Delta Nha Be 1 / 5
UDT Det Golf Nam Chan 1 / 7
UDT Det Hotel Danang 1 / 8
Identification of detachmensts can by baffle. UDTs and SEALs could have detachments signed by the same letter in the same time during Vietnam War. Mobile Support Team (MST) which ride on the special boats used the same system. Only the Beach Jumper Unit (BJU) used another better system.
 
SEAL detachments
Det Alfa detachment ST-1, platoons for direct action in Vietnam.
Det Bravo combined detachment from ST-1 and ST-2 under command COMUSMACV for PRU program. Primary on IV Corps. Expanded on 4 October 1968 from 1/12 to 13/21.
Det Charlie  
Det Delta  
Det Echo combined detachment from ST-1 and ST-2 under command COMUSMACV for PRU program and for training of South Vietnamese unconventional combat units.
Det Foxtrot  
Det Golf detachment ST-1. One platoon for direct action in Vietnam. The biggest SEAL detachment in Vietnam War.
Det Hotel  
Det India  
Det Sierra  
   
UDT detachments
Det Alfa detachment UDT-12
Det Bravo detachment UDT-12. Pursued hydrographical recon along seashore of South Vietnam. This operation include secret missions from submarine USS Perch.
Det Charlie  
Det Delta detachment UDT placed in Camp Tian Sha near Danang.
Det Echo UDT detachment assigned to Amphibious Ready Group pursued standard recon missions.
Det Foxtrot UDT detachment assigned to Amphibious Ready Group pursued standard recon missions.
Det Golf UDT detachment assigned to river forces on peninsula Ca Mau.
Det Hotel UDT detachment assigned to river forces on peninsula Ca Mau.
Det India UDT detachment assigned to river forces on peninsula Ca Mau.
Det Sierra  
 
With the end of the Naval Advisory Group, Vietnam, came the end of involvement U.S. Navy in Vietnam. Navy SEAL and UDT detachments left Vietnam more early. During supreme involvement were in Vietnam nine platoons of SEALs for direct action with 2 officers and 12 enlisted for each platoon. Total were in country almost 200 members of SEALs.

ST-1 played big part on involvement in Vietman. It has on its top 350 men in year 1971. ST-2 started acrual, too but not in the benchmark as the ST-1.

With the end of the war came the end of big number of SEAL members. ST-2 reduced it own strenght by normal wear and tear. Many SEALs from ST-2 leave the U.S. Navy after Vietnam War.

There were a lot of young men in ST-1. These don't leave teams and normal wear and tear couldn't accomplish U.S. Navy request for post-war teams. ST-1 and his command fired a lot of men from their teams back to fleet. By this new informations a lot of good SEALs didn't lenghted their duty in Navy.

 
Personnel in SEAL Combat Action Platoons
SEAL Team One - early condition (1962) 5 officers / 50 enlisted
1966 1967 1968 1969 1970 1971 1972 1973
25 / 97 29 / 155 29 / 182 37 / 225 53 / 225 52 / 310 39 / 274 25 / 170
 

SEAL Team Two - early condition (1962) 10 officers / 50 enlisted

1966 1967 1968 1969 1970 1971 1972 1973
20 / 100 23 / 115 27 / 116 23 / 115 23 / 115 23 / 103 20 / 123 20 / 128
 

Detachment Alfa - Platoons involvement to Vietnam War

1966 1967 1968 1969 1970 1971 Ended 14 June 1971
0 3 3 3 3 3    

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