Qoritaanka sii wadida faqradan - 4th Corps () ama Cửu Long Corps (, macno ahaan: "Ciidanka Cửu Long" ama "Ciidanka Mekong") waa mid ka mid ah afarta ciidan ee caadiga ah ee Ciidanka Shacabka ee Vietnam. Markii ugu horreysay waxaa la abaabulay 1974 intii lagu jiray Dagaalkii Vietnam, 4th Corps waxay door muhiim ah ka ciyaartay Ololaha Ho Chi Minh iyo Dagaalkii Kamboodiya iyo Vietnam
Waxaad Maanta ciidanku waxay joogaan Dĩ An, Bình Dương.