Book excerpt: A Pocket Guide to Netherlands East Indies was originally a 5.25"x4.24" pocket-size booklet released in 1943 for American GIs in World War II on their way to Indo-European countries, including Sumatra, Java, and Borneo, which were near territories occupied and controlled by the Japanese. The pamphlet outlines the role of the soldier, as well as descriptions of the different countries and peoples, their habits and cultures, and the native vegetation and wildlife. The booklet includes a map of the 3,000 countries making up the East Indies, guides to currency, time, measurements, and language, and a list of dos and don'ts when interacting with the general population. The War and Navy Departments, Washington D.C., publish pamphlets, reports, manuals, and instructions ranging on topics from countries and regions of the world, machine and weapon operation, roles of persons and positions, vehicle operation and safety, and other topics pertinent in wartime and for the military.