The Committee to Defend America by Aiding the Allies (CDAAA) was an American political action group formed in May 1940. It was at the forefront of the effort to support a "pro-British policy" against Axis aggression, advocating American military materiel support of Britain as the best way to keep the United States out of the conflict then raging in Europe. Politically, they would be classified as being pro-intervention; that is, they strongly believed the United States should actively assert itself in the War in Europe. The CDAAA disagreed strongly with the America First Committee, the main pressure group supporting complete neutrality and non-intervention.