Published in 1996 by Grub Street of London, this is the Supplement to the original book Above the Trenches by Christopher Shores, Norman Franks and Russell Guest. It is a hardcover volume in a protective plastic cover with 62 pages. This supplement to the original book published in 1990 brings the biographies of World War One Flying Aces up to date. The book is in very good condition with clean, tight pages and minor foxing. The back of the book has its original price tag on it. The center is full of black and white glossy illustrated pages of the photos of some of the WWI Aces. This is a great book for research and for those interested in the stats on these pilots.