A 3rd Combat Engineer Battalion bulldozer maneuvers through rubble during the patrol base reduction, Feb. 23. The 3rd CEB reduced the base in half, making it easier to maintain. Fewer Coalition Forces are stationed at the patrol base and the Afghan National Civil Order Police force is capable of taking the lead. - A 3rd Combat Engineer Battalion bulldozer maneuvers through rubble during the patrol base reduction, Feb. 23. The 3rd CEB reduced the base in half, making it easier to maintain. Fewer Coalition Forces are stationed at the patrol base and the Afghan National Civil Order Police force is capable of taking the lead.