http://digi.ub.uni-heidelberg.de/diglit/cpg126
Start at the beginning, click on the Union Jack for easy navigation, and use the scroll feature for ease in finding pages you like. Unit formations, early cannon, trebuchets, etc.. A few sample pages:
http://digi.ub.uni-heidelberg.de/diglit/cpg126/0017
http://digi.ub.uni-heidelberg.de/diglit/cpg126/0058
http://digi.ub.uni-heidelberg.de/diglit/cpg126/0061
http://digi.ub.uni-heidelberg.de/diglit/cpg126/0070
http://digi.ub.uni-heidelberg.de/diglit/cpg126/0079
http://digi.ub.uni-heidelberg.de/diglit/cpg126/0094
http://digi.ub.uni-heidelberg.de/diglit/cpg126/0104
