Not only was the camp 30 miles behind enemy lines, it had a large number of Japanese troops in the area. The POW camp at Cabanatuan itself was also housing Japanese troops. Mucci put together a force made up of Rangers and two teams of Alamo Scouts. The total force would be 8 officers and 120 enlisted men. All the men carefully studied aerial photographs, maps and diagrams showing the objectives and rendezvous points. The two teams of Alamo Scouts left on January 27 to connect with local guerilla forces and keep the camp under close surveillance. The Rangers would join them just before the attack. On January 29 the Rangers met up with Filipino guerillas five miles north of the camp. Mucci received reports of heavy Japanese troop movements in the area. The raid was put on hold for 24 hours. He learned there were 90 guards in the camp but also a force of 150 soldiers were staying there temporarily. Mucci arranged to have 50 oxcarts ready near the river to carry the prisoners too weak to walk. The raid was now planned for January 30 as night began to fall. Mucci also found a major asset in Filipino Captain Juan Pajota. He knew the area well and he was the one to warn Mucci to wait 24 hours until some of the Japanese moved on.