Good places to start

• Classics Journals. List of electronic classics journals from UCLA.
• Corax. "A Classics Hypersite."
• Corpus Scriptum Latinorum. A "Digital Library of Latin Literature." 
• Dictionary of Greek and Roman Biography and Mythology. Encyclopedia published in 1867.
• Digital LIbrarian: Classics and Ancient World. Extensive list of classics links.
• Electronic Resources for Classicists. Numerous links to criticism, e-journals, e-texts, and more.
• Guide to Greek and Roman Writers. (pdf) (chapter from History of Rome by Le Glay & Voisin).   

Books

• Ancient Roman Writers, by Ward Briggs
• Ancient Writers: Greece and Rome, by T. James Luce
• Crowell's Handbook of Classical Literature, by Lillian Feder
• Dictionary of Latin Literature, by James Mantinband
• Greek and Latin Authors, 800 BC-AD 1000, by Michael Grant
• The Names in Roman Verse, by Donald Swanson. Call # PA2379 .S9 1967.

Article Databases

• JSTOR (Military History, Journal of Military History)
• Sage Complete (War in History)