If you are interested in British military law, you may wish to look at an article I wrote some years ago in the WAR OF 1812 MAGAZINE, part of the Nap Series.
It contains a brief review and summary of British military law in the Napoleonic Period.
http://www.napoleon-series.org/military/Warof1812/2009/Issue11/c_hampton.html
Cheers
DG