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Rung Sat Special Zone (Vietnamese: Đặc khu Rừng Sác) was the name given during the Vietnam War by the South Vietnam Government and American forces to a large area of the Sác Forest (Vietnamese Rừng Sác), which is today known as the Cần Giờ Mangrove Forest. It was also known as the "Forest of Assassins."[1] The name was derived from a misinterpretation of the Vietnamese word Sát to mean "assassin". The actual name, Rừng Sác, is a Sino-Vietnamese word that roughly translated to "salty forest," a reference to its proximity to the saltwater marshes of the delta.


The Sác Forest comprises approximately 1,256 square kilometres (485 sq mi) of tidal mangrove swamp including over 4,800 kilometres (3,000 mi) of interlocking streams located approximately 36 kilometres (22 mi) south-southeast of Saigon. Its boundaries in 1962 were Nhà Bè District and Nhơn Trạch District to the north, Long An Province and Tiền Giang Province to the west, Phước Tuy Province to the east and the South China Sea to the south.[2][3]

On 8 June 1962, the South Vietnamese Government organized the Rung Sat Special Zone (Đặc khu Rừng Sác) as a military region in order to defend the Lòng Tàu River, the main shipping channel from Saigon to Vũng Tàu.[2]

The Viet Cong established base areas in the zone from the late 1950s and in April 1966 COSVN designated the area as the D-10 Special Military Zone.[2]

Due to the difficult conditions for ground operations within the zone, the VC regarded it as a safe area, however from 1965 onwards the USAF began defoliating the area as part of Operation Ranch Hand.[2]

Following attacks on allied shipping on the Lòng Tàu River, from 27 March to 6 April 1966, 1st Battalion 5th Marines and two Battalions of Vietnamese Marines launched Operation Jackstay, a search and clear operation along the Lòng Tàu shipping channel killing 63 VC and seizing and destroying large supply caches.[4] [5]

Following the conclusion of Operation Jackstay, the Marines handed over responsibility for the zone to the 1st Battalion, 18th Infantry Regiment.[6] Responsibility for security in the zone was then passed to the Mobile Riverine Force and the 9th Infantry Division.


  1. ^ Tucker, Spencer C. (2011). The Encyclopedia of the Vietnam War. p. 407. The Saigon River, which meandered through the Rung Sat Special Zone, a VC-dominated area also known as the “Forest of Assassins,” provided allied seaborne logistics a direct route to the South Vietnamese capital. 
  2. ^ a b c d Haines, E. R. (2013). "Rung Sat Special Zone Intelligence Study". Mobile Riverine Force Association. Retrieved 28 May 2013. 
  3. ^ Kelley, p 5-450
  4. ^ "Operations List". Vietnam Center and Archive. 2011. Retrieved 28 May 2013. 
  5. ^ http://www.flyarmy.org/panel/battle/66032600.HTM[dead link]
  6. ^ Pezzoli, Ray (December 2001). "Vanguards in the Rung Sat". historynet.com. Retrieved 28 May 2013. 

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Rung_Sat_Special_Zone — Please support Wikipedia.
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9 news items

Coeur d'Alene Press
Sun, 10 Nov 2013 23:03:20 -0800

The mess tent was situated between the operations center and radio room, and the Vietnamese Navy Headquarters for the Rung Sat Special Zone. The Rung Sat, which was Vietnamese for Forest of Assassins, was a 485-square-mile tidal mangrove swamp ...
National Journal
Fri, 01 Jul 2011 08:31:20 -0700

I was Brown Water Navy in the Vietnam's Rung Sat Special Zone.....two tours in one enlistment...UDT 11 in '66 and Seal Team One in '67......HooYah. Traitors of Pakistan. Musharraf and Zardari have betrayed Pakistan for American dollars. popseal. Tap ...

ShadowSpear Special Operations

ShadowSpear Special Operations
Mon, 09 Dec 2013 23:34:11 -0800

The United States Navy Sea, Air and Land (SEAL) teams or SEAL Teams are the elite Special Operations Forces of the U.S. Navy, employed in unconventional warfare, foreign internal defense, direct action, Counter-Terrorism, and special reconnaissance ...
Wed, 10 Jul 2013 00:08:30 -0700

... the boats targeted Viet Cong guerrillas who would ambush them from shore. Many U.S. soldiers died in the mission to keep the waterways passable. Restemayer said one area, the swampy Rung Sat Special Zone, was called "the forest of assassins." ...
ABC News
Mon, 09 May 2011 16:38:16 -0700

A central Pennsylvania pastor who said he was a Navy SEAL and Vietnam vet has been exposed as a fraud – and the man who caught him says the number of wannabes falsely claiming to be veterans of the elite force has "skyrocketed" since the May 1 SEAL ...
Washington Times
Tue, 25 Jan 2011 06:34:19 -0800

USS Weiss (APD/LPR-135) [High Speed Transport/Small Amphibious Transport] conducted troop-landing operations with Marine and SEAL units at various locations in the Mekong River Delta and Rung Sat Special Zone and routinely surveyed river mouths ...
Veterans Today Network
Wed, 29 Sep 2010 18:36:40 -0700

I fell in love with German Shepherds while I was serving in South Vietnam. I was not a K9 handler but when our slicks Hueys would be loading up the Infantry while we circled above in our C model Huey gunships, I would once in a while see a German ...
Atlantic Online
Thu, 06 Oct 2005 07:45:30 -0700

He was a young Marine captain assigned to the Rung Sat Special Zone, a putrid swamp that begins just south of Saigon. Miles and miles of thick, slurping mud that swallowed soldiers to their waists, it is populated by galaxies of mosquitoes and other ...

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