OK - no reply forthcoming so:
The first (upper character) could be read as: jyuu - tsuwamono = military
Go here and search for [tsuwamono]:
http://www.csse.monash.edu.au/cgi-bi...jwb/wwwjdic?1B
Another very similar character is: Jutsu - inu = dog.
http://www.nuthatch.com/kanji/demo/radicals.html
See#62, third character. I like that - Dog Jutsu (the first thing my Japanese friend said when I pointed it out).
I'd say the one they have drawn is in between both but closest to the first one - probably their intention given its pronunciation - Jyuu. I have never seen this character used to represent Jujutsu. The usual Ju (Jyuu - yawa-ra) of Jujutsu is the same as the Jyuu of Judo - (yawa-ra).