The base was located in the Quế Sơn Valley along Route 535, approximately 27 km southwest of Hội An.

[3]: 211 In the early morning of 6 January 1970 under the cover of monsoon rains the Vietcong 409th Battalion attacked Ross with mortars and sappers penetrating the wire.

[4]: 51  From April through June the PAVN and Vietcong carried out regular mortar and rocket attacks on Ross and Quế Sơn town.

[4]: 220 On 18 August 1972 following an artillery barrage by 130mm guns the PAVN 711th Division attacked and captured Quế Sơn town and Ross, including 15-20 of the then secret TOW missiles among the abandoned equipment.

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