In 1941 , he left his position at the IPR but served as a trustee until 1947 . Field attended the 1945 United Nations founding conference in San Francisco as an IPR representative , and also as a writer for the '' Daily Worker . '' In 1940 , Field became executive secretary of the American Peace Mobilization ( APM ) , a position for which he had been recruited by Earl Browder himself . " Some time before the APM was formally organized , " wrote Field , " Earl Browder asked me if I would accept the executive secretaryship if it were offered me . " At APM , Field emerged as a committed pacifist , demanding that the United States stay out of the war in Europe , at least while the Hitler-Stalin pact lasted . His reasoning , as he would explain in his autobiography , was that " the European war in those early stages was one between rival imperialists , the British Empire and the Nazi Reich . " By summer of the following year , however , Field came to a complete turnaround : on June 20 , 1941 , in his capacity as executive secretary , he suddenly called off the organization 's " peace picketing " of the White House reversing himself to demand immediate war on Germanyjust two days later , Nazi Germany would launch its surprise invasion of the Soviet Union
United Nations founding conference
United Nations Conference on International Organization
Frederick Vanderbilt Field