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Operation Desoto
Part of Vietnam War
Date 27 January-7 April 1967
Location Đức Phổ District, South Vietnam
14°48′54″N 108°57′36″E / 14.815°N 108.96°E / 14.815; 108.96
Result U.S. victory
Belligerents
United States FNL Flag Viet Cong
Strength
3rd Battalion 7th Marines
12th Marines
38th Battalion
95th Battalion
Casualties and losses
76 killed, 573 wounded 383 killed

Operation Desoto was a US Marine Corps operation that took place in Đức Phổ District, lasting from 27 January to 7 April 1967.

PreludeEdit

As part of the US-Vietnamese combined action plan for 1967, the 3rd Battalion 7th Marines was scheduled to assume the defense of Đức Phổ District from the Army of the Republic of Vietnam (ARVN) 4th Battalion, 4th Regiment 2nd Division which would concentrate on pacification.[1]

OperationEdit

On 27 January, Company L 3/7 Marines and Battery I 12th Marines were deployed by helicopter to Núi Đàng. The following morning Companies I and M 3/7 Marines were landed by helicopter north of Núi Đàng and moved west and east to secure the adjacent villages of Vinh Binh (1) and Truong Sanh (14°49′05″N 108°58′30″E / 14.818°N 108.975°E / 14.818; 108.975).[1]:55

On occupying Truong Sanh villagers informed the Marines that a large Vietcong force had abandoned the village and moved north to Tan Tu (2)(14°49′23″N 108°58′23″E / 14.823°N 108.973°E / 14.823; 108.973). As Company M advanced on Tan Tu (2) they were hit first by sniper fire and the automatic weapons fire from entrenched Vietcong in the village, the Marines withdrew, called in artillery and airstrikes and attacked again, but were again driven back by heavy fire and so withdrew to a night defensive position. On the morning of 29 January Companies I and M assaulted Tan Tu (2), despite suffering casualties from long-range sniper fire the village was barely defended and the Marines secured it by 13:30.[1]:55

On 30 January after preparatory artillery fire, Company I moved east towards the village of Hai Mon (14°49′23″N 108°58′41″E / 14.823°N 108.978°E / 14.823; 108.978) where they were met with intense small arms fire, airstrikes were called in followed by helicopter gunships. One of the UH-1E gunships was hit and had to make an emergency landing. The Vietcong defenses were well-constructed and the Marines soon found themselves caught in a crossfire in the paddyfields west of the village. At 16:55 Company I was ordered to withdraw to the west and Company M was sent in to help them disengage under the cover of artillery and airstrikes, due to the intense fire the withdrawal and evacuation of casualties wasn't completed until 22:00.[1]:56

On 31 January a massive artillery bombardment was directed against Hai Mon. That night the 3/7 command post was hit by Vietcong mortar fire then attacked by an estimated 20 Vietcong. The attack was defeated with 2 Vietcong killed and 14 Marines wounded.[1]:56

On 5 February the Marines launched a fresh assault against Hai Mon. Reconnaissance had indicated that the Vietcong defenses faced west and so it was decided that Companies L and M would be deployed by helicopter east of the village. As artillery hit Hai Mon helicopters from HMM-262 deployed the Marines who were quickly able to overcome the defenses with supporting fire. A Vietcong force was observed escaping north by sampan across the Song Tra Cau and airstrikes were directed against them. On searching Hai Mon the Marines found a network of well-constructed tunnels and bunkers and engineers used over 3600 lbs of explosives to destroy them.[1]:57

Operation Desoto continued throughout February with the Marines searching numerous villages meeting minimal opposition but suffering steady attrition due to mines and sniper fire.[1]:57

On 16 February 1st Battalion 4th Marines launched Operation Deckhouse VI at Sa Huỳnh 18 km southeast of Núi Đàng, after securing the area and establishing a supply base 1/4 Marines were to move north to support 3/7 Marines and conduct search and destroy operations in the Đức Phổ/Mộ Đức Districts. 1/4 Marines uncovered numerous Vietcong stores and bunkers and suffered 6 killed and 61 wounded while the Vietcong lost 201 killed before arriving at positions near Nui Dau (14°45′14″N 109°00′00″E / 14.754°N 109.00°E / 14.754; 109.00) on 25 February.[1]:58 Deckhouse VI continued until 3 March.[1]:60

Operation Desoto continued into March with numerous small skirmishes with the Vietcong. On the early morning of 24 March the Vietong hit the 3/7 Marines base with mortar and recoilless rifle fire killing 3 Marines and igniting a 70,000-gallon fuel storage dump. On 27 March the Vietcong fired 18 recoilless rifle rounds at the USS Ozbourn (DD-846) 1 km from the mouth of the Song Tra Cau causing no damage to the ship.[1]:61 Also on 27 March Company K 3/7 Marines conducted a search operation near Nui Dau and Vietcong were observed to be escaping the area and hiding in a nearby swamp; helicopter gunships attacked the swamp killing 23 Vietcong while another 49 were captured.[1]:62

On 5 April a patrol from Company G 3/7 Marines triggered a mine near their night defensive position southeast of Nui Dau. A medical evacuation of the two wounded Marines was requested and a UH-1E gunship #151852 from VMO-6 arrived to pick up the wounded; the helicopter was instructed to hover over the landing zone in case there were any more mines, but as it did so a command-detonated mine made from a 250 lb bomb was detonated destroying the helicopter and a further mine was detonated as Marines rushed to assist, killing all 4 helicopter crew and 8 Marines and Navy corpsmen.[1]:62[2]

AftermathEdit

Operation Desoto concluded on 7 April, the Marines had suffered 76 dead and 573 wounded and the Vietcong 383 killed.[1]:63

NotesEdit

PD-icon.svg This article incorporates  from websites or documents of the United States Marine Corps.

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