These are Battle School Army Insignias that I designed for the various armies Ender commanded or served.  I created the Dragon Army first and I put it on a t-shirt and wore it to an Card book signing in 2000. When he saw it, he loved it and ended up asking me to create the other 3 logos then he licensed these images from me to sell on the Hatrack Site!(www.hatrack.com) http://www.cafepress.com/hatrackriver