Try these databases first to find materials related to military studies topics.
Choose Words in Subject from the search menu and then type the branch that interests you. A search for the subject Artillery retrieved 30 hits. The search Army and Medical retrieved 29 hits!
Encyclopedia Britannica Online
Online version of the Encyclopedia Britannica and Merriam-Webster Dictionary & Thesaurus
Virtual Reference Library
A collection of encyclopedias, almanacs, and specialized reference sources for multidisciplinary research
Composed of high-quality articles from the Columbia Encyclopedia, Sixth Edition
A gateway to 17,000 encyclopedia articles, multimedia, a talking dictionary, and a world atlas
CREDO Reference Collection [Link to overview and features ] Was Xreferplus Reference Collection
Contains over 2 million entries from reference books in all major subjects, 65,000+ images (art, diagrams, maps, and photos), and over 93,000 audio pronunciation files.