Social sciences

The PBY Catalina, designed and produced by Consolidated Aircraft, whose production was supplemented by that of Boeing Canada, Canadian Vickers, and the Naval Aircraft Factory, was the most widely used flying boat of all time.  Developed in the 1930s, the famed patrol bomber was used around the world by the United States and its allies—the Soviets even produced hundreds of duplicates.

During WWII, Germany fielded a variety of six- and eight-wheeled armored cars, which were used in numerous ways, including reconnaissance, antitank, infantry support, and other roles.  The earliest of these vehicles, the 6-Rad, or six-wheeled vehicles, were based on 6 × 4 truck chassis.

This is a comprehensive history of Italian mountain troops (the Alpine infantry “Alpini” and the mountain artillery “Artiglieria da Montagna”) from the 1870s to the present. The Alpini suffered a crushing defeat to the Ethiopian army at Adwa in 1896. During WWI, the Italian mountain troops fought against Austrian Gebirgsjäger high in the Alps.