Find a military era and stick to it e,g
1914-1918 define a chapter and stick to it e.g civilian, army,navy, air-force, politics.Learn to read a language or two, you don't have to speak a language to use it in research. German is one of the best, it's the most spoken Language in Europe, and as well as being the basis for all the Scandinavian languages,it's the basis for Flemish and English.Look ...