Robert Simpson's massive project of studying and documenting German training rifles has resulted in this much-anticipated reference tome. At 700 pages and full color, it a tremendous resource for understanding the chronology and features of the dozens if not hundreds of variations of these rifles that were brought back by American soldiers after WWII. The Nazi party deliberately and effectively reorganized German shooting sports into a single predominant type of competition oriented towards military training when they took power. As part of this effort, the party wanted competition rifles to mimic the handling of the military K98k Mauser, and this led to a series of progressively better .22 rimfire rifles. These rifles were manufactured by a consortium, and with dozens of companies participating, this leads to huge numbers of variations in the markings and fine details of the resulting guns. When writing a book on such a topic, organization is hugely important. What Simpson has done is begin the book with sections on the two major patterns of training rifles - the DSM (Deutsches Sportmodell) and the KKW (Kleinkaliber Wehrsportgewehr). Each of those sections is subdivided into chapters for each company that was involved, and those chapters detail the markings, variations, and other relevant details to each company's production. Each section also has a table at the end (often several pages long) listing all of the examples catalogued as part of the book, including their serial numbers, serialized parts, unique markings, and relevant notes. The sections on the DSM and KKW constitute about the first half of the book, and the second half is used to cover a wide range of associated material. There are chapters on the Nazi training schools, police training rifles, caliber conversion units, smaller-production training rifles (like the Walther Sportmodell and W625), full-caliber training rifles (wehrmanngewehr), 4mm rifles, air rifles, accessories, and more. On