Operation Toan Thang (Than) - Phase I, Phase II, II, 1/69, III, IV, 41, and 42

Operation Toan Thang (Than) Phase I

Start: April 8 1968

End: May 31 1968

Results: 11,397 enemy killed.

Operation Toan Thang (Than) Phase II

Start: June 1, 1968

End: February 16, 1969.

Results: 10,285 CSW were captured along with 1,69S tons of rice. US casualties were 1,79S killed and 10,465 wounded. [204]

Research notes: There are numerous other operations with similar names. These include:

February 22, 1967. Operation Junction City. A 12-week joint US-ARVN operation in Tay Ninh province, on the Cambodian border. The largest US airborne operation of the war, its mission was to capture or destroy a major Viet Cong command center. Though it failed in this mission, Operation Junction City did result in significant losses for the Viet Cong. (See also the April 29 - May 2, 1970 Cambodian Parrot's Beak Operation Toan Thang 42.) *

June 23, 1968 - July 18, 1968. Operation Toan Thang II (Final Victory).  4 RAR/NZ (ANZAC) Operation. The battalion was tasked to dominate a belt of approximately 11,000 metres between Long Binh and Bien Hoa which was considered to be the location and range of enemy rockets expected to attack both locations during the mid-year offensive. Each company patrolled its own AO (Area of Operations) with support from 104 Field Battery located at FSPB (Fire Support Base) Concord. During the operation there were 6 contacts with the enemy, 4 involving D Company who suffered the first Australian soldier killed in action, Private Barnett of 12 Platoon. The battalion saw 'Spooky' in operation for the first time. During the latter part of the operation D Company redeployed to the north-east for three days and was supported by a section of 102 Field Battery, the direct support battery for 1 RAR. The operation concluded on 18 July and the battalion was heli-lifted by Chinook to Fire Support Base [FSB] Chestnut for Operation Merino. The operation was successful as no enemy rockets were fired on either Long Binh or Bien Hoa from the battalions AO. *

Source: http://www.4rarassociationsaustralia.com/toan-thang2017.html

January 20, 1969 – January 23, 1969.  Operation Toan Thang 1/69. [35] [3] 4th Battalion, Royal Australian Regiment/Royal New Zealand Infantry Regiment (ANZAC) reconnaissance operation in Phước Tuy Province. *

February 11, 1969. Operatiion Toan Thang (Bien Hoa Province). At approximately 2150, US helicopter gunships on an enemy reconnaissance mission, detected an estimated 100 enemy soldiers in an open area 11 miles east of of Bien Hoa. The area was illuminated and the gunships engaged the enemy with aerial machine-gun and 2.75-in. rocket fire. In the same general area, a US IIFFV recon element sighted an unreported number of enemy of enemy 122mm rockets in launching pens. The azimuth of the rockets was not reported. The rocket pens were engaged throughout the night by artillery, helicopter gunships, and US Air Force F-100s from the 3rd, 31st & 35th Tactical Fighter Wings and F-4s from the 12th TFW along with US Air Force AC-47 gunships. Numerous secondary explosions were observed by the crewmen during the strikes. The bodies of 50 enemy soldiers were sighted lying in the strike areas. [204] *

February 12, 1969. Operation Toan Thang (Tay Ninh Province). At approximately noon, aero scouts from the air cavalry section of the 1st Calvary Div (AM) received heavy ground fire while inserting a platoon in an area 9 mi NW of Phuoc Binh. Two OH-6 light observation helicopters and one UH-l helicopter were hit by the enemy ground fire & crashed during the action killing 3 crewmen & wounding 3 others. All 3 aircraft were lost. The troops made contact with an unknown number of enemy in the vicinity. USA artillery and aerial rocket artillery helicopter gunships along with tactical aircraft engaged the enemy personnel throughout the afternoon. The ground troops were extracted from the area at an unreported time with no casualties and reported 11 enemy killed. Later, helicopter crewmen reported sighting an additional 53 enemy bodies lying in the strike areas raising the total to 64 enemy killed. [204]

February 16, 1969 – Oct 31, 1969.  Operation Toan Thang III. 25th Infantry Division and 3rd Brigade, 9th Infantry Division search and destroy operations in Bình Dương, Gia Dinh, Hậu Nghĩa, Long An and Tây Ninh Provinces. [35]

November 1, 1969 – May 1, 1969.   Operation Toan Thang IV. 1st Cavalry Division, 1st Infantry Division, 3rd Brigade, 9th Infantry Division and 25th Infantry Division search and destroy operations to prevent PAVN/VC movement and operations in III Corps and IV Corps. [35] Significant results of United States and Free World Military Assistance Forces (US/FWMAF) participation in Campaign Toan Thang, Phase III, during May, June, and July were 877 US/FWMAF killed (826 US, 21 Australians and New Zealanders, 30 Thais); 6,324 wounded or missing (5,818 US, 142 Australians, 364 Thais); 11,588 enemy killed and 482 enemy captured. In addition, enemy losses included 2,417 small arms; 598 crew served weapons; 167,032 rounds of small arms ammunition; 8,392 high explosive rounds; 35 rockets; 1,325 mines; 6,660 grenades; and 170.36 tons of rice either captured or destroyed. [264] Cumulative results of Campaign Toan Thang, Phase IIl, included 1,543 US/ FWMAF killed (1,475 US, 26 Australians and New Zealanders, 42 Thais); 10,546 wounded or missing (9,779 US, 214 Australians and New Zealanders, 553 Thais); 21,390 enemy killed; and 848 prisoners. Enemy losses included 5,024 small arms; 1,310 crew served weapons; 898,122 rounds of small arm ammunition; 26,454 high explosive rounds; 40 rockets; 2#331 mines; 12,874 grenades; and 777.58 tons of ricb either captured or destroyed.

April 14, 1970 - April 17, 1970.   Cambodia, Operation Toan Thang 41. 3rd Brigade, 25th Infantry Division, ARVN 49th Regiment, 31st, 36th and 52nd Ranger Battalions and 10th and 18th Armored Cavalry operation against a PAVN logistics and rest area Angel's Wing, in Svay Rieng Province, Cambodia.

April 29, 1970 - May 2, 1970.   Cambodia, Parrot's Beak - Operation Toan Thang 42.  50,000 ARVN (two armored cavalry squadrons from III Corps and two from the 25th Division and 5th Division, an infantry regiment from the 25th Division, and four Ranger battalions from the 2nd Ranger Group) and the 30,000 members of the US 1st Cavalry Division, 9th Infantry Division and 11th Armored Cavalry Regiment moved in the Parrot's Beak to target the NVA/VC base areas 367 and 706, in Svay Rieng Province, Cambodia.  [82] This was the largest offensive since Operation Junction City in 1967. [17] Thirteen major operations were conducted by the Army of the Republic of Vietnam (ARVN) between 29 April and 22 July and by U.S. forces between 1 May and 30 June. The objective of the campaign was the defeat of the approximately 40,000 troops of the People's Army of Vietnam (PAVN) and the Viet Cong (VC) in the eastern border regions of Cambodia. 

Operation Toan Thang (Ultimate Victory) 42 
"Lieut. Gen. Do Cao Tri, the South Vietnamese commander of the operations" - May 3, 1970
SOUTH Vietnamese troops 1–3 were in high spirits and their officers appeared cocky as Operation Toan Thang (Ultimate Victory) 42 went into its third day in the Parrot's Beak and Operation Toan Thang 43, involving American combat troops, was launched to the north in the Fishhook area.
Source: May 3, 1970
https://www.nytimes.com/1970/05/03/archives/beer-cans-in-cambodia-a-sign-gis-are-there.html

Operation Toan Thang 43