Segue abaixo alguns tema para fazer sign tech
Battlefield - call duty entre outros temas de guerra
http://img09.deviantart.net/59cf/i/2013/265/2/d/call_of_duty_ghosts___soldier_render_by_ashish913_by_ashish913-d6czv1f.png
http://4.bp.blogspot.com/-V_Om5Nz6a5k/To3y_8iHIdI/AAAAAAAAAKg/7PlZ3q4uNT0/s1600/call+of+duty.png
http://lh5.ggpht.com/-PeYG4l9hxOA/TioM4ObaC5I/AAAAAAAAB_w/ZNtGSGIIi10/s9000/Call%2Bof%2BDuty%2BBlack%2BOps%2BFlorest.png