The U.S. Naval Radio Station, Tarlac, also known as the U.S. Naval Radio Transmitter Facility, Capas, Tarlac, was a remote unit of the U.S. Naval Communication Station Philippines (NavComStaPhil), located at 15.354114°N 120.536048°E, near the town of Capas, Tarlac Province, Luzon, Republic of the Philippines. The sole purpose of the station was to provide short-wave radio transmission capability for its parent communication station, that is, to be the radio voice for NavComStaPhil. It provided wide-area radio broadcasts, as well as dedicated, point-to-point radio transmissions to individual U.S. Navy ships in the vicinity of the Philippine Islands.

Camp O'Donnell is a current military base and former United States military reservation in the Philippines located on Luzon island in the municipality of Capas in Tarlac. It housed the Philippine Army's newly created 71st Division and after the Americans' return, a United States Army camp. During World War II, the reservation was used as a prisoner-of-war camp for Filipino and American soldiers captured by Japan during its successful invasion of the Philippines. About 60,000 Filipino and 9,000 Americans were housed at the camp. During the few months in 1942 that Camp O'Donnell was used as a prisoner-of-war camp, about 20,000 Filipinos and 1,500 Americans died there of disease, starvation, neglect, and brutality.