Following the retreat of republican forces at the end of the Spanish Civil War, many people become refugees in France and North Africa. Whilst some would later return, many men of fighting age who had been in the Republican army could not. This is their story from how they ended up in refugee camps in the south of France to being members of the British army including members of the SAS. 

Sean Scullion is currently writing a book on this topic. He also gives battle field tours and speaks on the subject at public events.