The autonomous Liberty Congress effort was undermined by the U.S. Army's anti-radical Military Intelligence Bureau (MIB) in a campaign that included NAACP leader Joel E. Spingarn (a Major in Military Intelligence) and W. E. B. Du Bois (who applied for a Captaincy in Military Intelligence). The Liberty Congress protest efforts in wartime can be seen as precursors to the A. Philip Randolph-led March on Washington Movement during World War II, and to the Randolph and Martin Luther King, Jr.-led March on Washington for Jobs and Freedom during the Vietnam War.