Alejandro de Quesada is a Florida-based military history writer, an experienced researcher and collector of militaria, photos and documents and runs an archive as a secondary business, with a strong Hispanic-American content. He has written 12 books and over 50 articles, including for Osprey Elite 137 The Mexican Revolution 1910–20. He is a leading authority on Spanish-American subjects.
Stephen Walsh studied art at the North East Wales Institute and has worked as a professional illustrator since 1988. Since then he has illustrated a variety of books and games including Settlers of Catan. His projects for Osprey include such diverse subjects as the battle of Otterburn, the Chinese army from 1937 to 1949, and the US Home Front in World War II.