Republican troops of the International Brigades at the beginning of the Nationalist attack on the capital during the Spanish Civil War, Spain,1936

Growing Guerrilla Warfare

American resistance to the Nazis had its roots the skills of Spanish Civil War veterans, who were recruited by the OSS when they returned from Spain.
News reporters mingle with members of the International Brigade, amongst them is Ernest Hemingway (with mustache and glasses), during the Spanish Civil War, c. 1937.

The International Brigades

Foreigners fighting for Ukraine may call to mind the International Brigades that fought in defense of the Spanish Republic during the Spanish Civil War.