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Dien Ban, and several Combined Action Platoons. One of these attacks, carried out against the Vinh Dien Bridge, one kilometer north of Dien Ban, temporarily closed Highway 1.

On 29 September, south of the Thu Bon River near Liberty Bridge in
the Go Noi Island sector, elements of the 5th Marines engaged a large
enemy force in the village of Cu Ban, a notorious Communist hideout
and scene of many firefights. In a two-day battle, the Marines surrounded
and pressed hard against the North Vietnamese. Late on the 30th, Company
F, 2d Battalion, 5rh Marines assaulted the village and overwhelmed the
defenders, reporting 57 enemy dead and 3 prisoners. Seven Marines died
and 12 suffered wounds in the fight. Further to the west at the end
of the month, NVA regular forces threatened the Special Forces Camp
at Thuong Duc, resulting in a III MAF multi-battalion operation.15

Operation Maui Peak

The Special Forces camp at Thuong Duc was nestled in a valley at the confluence of the Song Vu Gia and the Song Con, where "Green Berets" trained and advised CIDG troops recruited from the local villages. By controlling these two river valleys, the Special Forces soldiers and their CIDG counterparts forced the enemy to move troops and supplies bound for the Da Nang area along far more difficult routes through the mountainous jungle. Additionally, they denied the enemy access to the source of food and recruits located in the populated areas along the rivers.

Near the end of September, the Communists were ready to strike. III
MAF intelligence officers identified elements of two NVA infantry regiments
surrounding the camp: the 21st from the 2d NVA Division
and a new 141st Regiment. The 368B Rocket Regiment
was in support. In a pre-dawn attack on 28 September, the enemy overran
and occupied two of the camp's outposts, seriously threatening the main
compound. With bad weather hampering normal close air support operations,
a Marine Tactical Air Control Party flew into Thuong Duc in the late
afternoon. Using a radar beacon, the forward air controller directed
18 sorties of Grumman A-6A Intruder all-weather attack aircraft against
the enemy force. By the afternoon of the 29th, the enemy troops occupying
the two outposts with-

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