Chris,<br>I just discovered what the ying/yang sign meant in military signs<br>One guy told me this:<br>"The "Yin-Yang" is the shoulder patch that denotes the 29th Infantry Division... aka "Blue & Gray"... which was a Virginia National Guard unit before the war and after... "<br><br>If you are interested in WWII medical info here's a site<br>http://home.att.net/~steinert/wwii.htm<br>Reinhardt<br>