 When the PAVN made their "Hồ Chí Minh Campaign" final assault on South Vietnam in April 1975, before listening to the capitulation order of President Dương Văn Minh, General Hung planned a secret operation to send remaining ARVN soldiers and officers at jungles and military bases that would continue counterattack against VC units after Fall of Sagion.There he and his soldiers follow orders by the colonel to execute the location of secret delta places on long-term strategic resistance against VC for few months until PAVN/VC declare a ceasefire hoping a new South Vietnam country at Mekong Delta.Unfortunately, the colonel and the captain who planned to execute the order of secret operation escaped to sea shortly after President Minh surrender.