Historical:
Military Revolution - The Military Developments in Europe in the 15th, 16th and 17th Century
Army and fortification in Denmark-Norway 1500-1720 (Danish) Dissertation cand. mag. 2002, University of Aarhus, Denmark
Games:
World in Flames - WiF - house rules, incl. extended victory system
Cyberboard - download gamebox-file for 'War and Peace'
Art of Warfare generic campaign system - download software and rules