What operation is about to take place in the memoir, Five Years to Freedom: The True Story of a Vietnam POW?

Forces from the camp are to go to Le Coeur to drive out Vietcong forces. Le Coeur is too near Tan Phu to allow the newly-arrived Vietcong to remain. The plan is for one group to attack the hamlet while two other groups set up for an ambush if any escape the main attack.