This work will be a must for any enthusiast of the Luftwaffe and more exactly of the Spanish Blue Squadron and the Spanish air force history. A great chance for people who are interested in the experiences the Spanish pilots went through in Russia during the WW2. The book also includes an appendix with the biographies of every single member of the 4. Blue Squadron, sketches of the airfields, bibliography and a name index. It also contains a very nice set of colour pages with decorations given to the Spanish pilots and also other inedit photos never seen before that are in private collections.