Crusade in Spain by Jason Gurney is a hardcover history book published by Readers Union in 1974. This advanced to intermediate level book provides an insightful account of the Spanish Civil War and the international brigade that fought in it. The author, Jason Gurney, was a member of the New Zealand battalion of the brigade and his personal experiences add depth and authenticity to the narrative.

The book is in acceptable condition and is a must-have for anyone interested in the history of Spain or the international brigades. It was published in Spain and has a unique perspective on the events that transpired during the war.