Signatures are available through an BBcode Image link. They can be added through your user profile under the signature tab. Quotes and massages can be typed straight in and submitted. Images will require an image code to be pasted into the sig window. If you have any questions please PM me and I will help you out.
I am also Photoshop enabled and can do basic signatures and avatars for members on demand, just let me know. Forum Banners are also available in signature size on request.
Heres a good link for downloadable military avatars: http://www.entity.cc/archives8.php