Originally printed in Germany in the late 13th century,this is regarded as the oldest European weapons manual still in existence. Currently held in the the Royal Armoury at Leeds the attached link makes it available to everyone;

http://freywild.ch/i33/i33en.html

click on the quaternum sections for diagrams and descriptions of the varying techniques

http://uk.video.search.yahoo.com/search/video;_ylt=A0PDodp0p3RQARQA8SxNBQx.?p=i%2033%20sword%20and%20buckler&fr=mcafee&fr2=piv-image

There are some videos of it in action as well.

From 1459, the combat instruction manual written by Hans Talhoffer (PDF)

http://www.thearma.org/pdf/Fight-Earnestly.pdf