General
Jonathan Wainwright surrendered all U.S. forces in the Philippines in May 1942. On the island of Mindanao at this time, McClish responded to Filipino authorities who asked him not to surrender but to combat the banditry that was running rampant after the defeat of the American and Filipino forces. McClish and about 190 American soldiers and civilians who refused to surrender began to organize guerrilla forces on Mindianao. Mindinao was not as heavily occupied as Luzon, the other large island of the Philippines. The Japanese occupiers were estimated to number 50,000 soldiers and controlled only the larger cities and main roads and waterways. The guerrillas had more freedom of movement and easier coordination with each other than on Luzon. The guerrillas "ran schools, courts, tax collecting, trade, and began printing money." By September 1942, McClish had established one of the first guerrilla units on Mindanao with more than 300 Filipino volunteers under his command, half of them armed. On 20 November 1942, McClish, a major, and Captain Clyde Childress met with
Wendell Fertig, a self-proclaimed general officer. They accepted Fertig's authority to command guerrilla forces on Mindanao. Fertig promoted McClish to lieutenant colonel and appointed him the commander of the 110th Division with responsibilities in four northeastern provinces of Mindanao and with Childress as his second in command. The 110th division of McClish eventually had a complement of 317 officers and 5,086 enlisted men, nearly all of them Filipinos, including some
Moros. The primary task given to McClish and other guerrillas on Luzon by the U.S. Army commanders in Australia was intelligence gathering. The guerrillas were ordered to avoid combat when possible with the Japanese, a directive they sometimes ignored. McClish's most ambitious military endeavor was probably the siege of the town of
Butuan from 3 to 10 March 1943. Two thousand of McClish's guerrillas besieged the Japanese contingent in a schoolhouse. The siege was broken when Japanese reinforcements arrived 10 March. Twenty guerrillas and an estimated 50 Japanese were killed. Although the siege was a failure, it apparently won credibility for the guerrillas among the local people as fighters, not just refugees hiding in the mountains. The siege also resulted in a de facto agreement between the local Japanese commander and the guerrillas which gave the guerrillas freedom of movement in most of the region in exchange for the Japanese rarely venturing outside the towns and cities they occupied. That became important for intelligence operations and the reception by the guerrillas of supplies delivered by submarines. However, Fertig criticized McClish for the expenditure of scarce ammunition in the siege. Also in 1943, when
coastwatcher Chick Parsons arrived on Mindanao to carry out MacArthur's mandate to focus on intelligence gathering, McClish provided him with personnel for his coast watching station, fueled his launch with diesel distilled from coconuts, and mounted a .50 caliber machine gun on his boat. ==Problems with Fertig==