http://plato-dialogues.org/tools/mapindex.htm
maps of the ancient world
http://www.fordham.edu/halsall/sbook.html
medieval sources of reference
http://www.geocities.com/Athens/Itha.../military.html
roman military units
http://www.fiu.edu/~eltonh/warfare/units.html
http://oncampus.richmond.edu/academi....ex.html
roman army OOB and bibliography