The effort to win the war began at home—and for the researchers at Langley Memorial Aeronautical Laboratory, enhancing America's military aviation arsenal was the key to victory. Formed in 1915, the National Advisory Committee for Aeronautics established itself over the next 25 years as one of the world's finest research organizations. When World War II began in 1939, the NACA employed a mere 500 workers and maintained a budget slightly in excess of $4 million. To meet the demands of the war, a special partnership was quickly forged between NACA researchers, industry designers, and military planners. The Langley laboratory possessed world class aeronautical research facilities and flight research operations, making it ideally suited to help America win the war. Military historian Mark Chambers tells the story of the monumental task of developing the planes that spurred Allied victory in World War II.