In 1936, a right-wing military coup tried to overthrow the new, legally elected, democratic government of Spain. Hitler and Mussolini quickly joined the fight on the side of the fascist military. In response, and against the wishes of the U.S. government, about 80 American women joined over 2700 of their countrymen to volunteer for the Republican side in the Spanish Civil War. This film is composed of interviews with and excerpts from the letters, journals, and published writings of some of these women, as well as of supporters and sympathizers including Martha Gellhorn, Eleanor Roosevelt, Virginia Cowles, Josephine Herbst, and Dorothy Parker.

This documentary examines the experiences of the Abraham Lincoln Brigade, using interviews with survivors more than 50 years later. First, the film sets the context with the rise of Fascism. Then, in 1936, Spain's military revolts against the elected government, and the U.S. and Europe agree not to intervene. In response, volunteers snuck past border guards into Spain to fight with the Republicans. The men and women veterans describe the perils of reaching Spain, limited training, responsibilities of command thrust on the very young, deprivations of a soldier's life, lack of matériel, horrible rates of casualties, and ultimate vindication at the end of World War II.