Plot hole: Roger's initial briefing at the beginning of the film states that 'Tom' goes out from 104 and 'Harry' from 105. Despite this the goons are said to be in 105 when they find the entrance to Tom.
Plot hole: The officers arrived in separate vehicles where they could view the countryside and the road leading to the camp, yet they later claimed to Hilts they knew nothing about the area.
Suggested correction: Totally wrong. They were always in covered trucks for that very reason. One of the first scenes in the guards rolling up the tarps so that the prisoners could get out of the trucks.