The United States Signal Corps US Signal Corps Ring US Signal Military Ring

The mission of the Signal Corps is to give and handle communications and details systems assistance for the command and handling of combined arms forces. In other terms their task is to insure that combat forces are ready to connect on the battlefield.Signal support is crucial to units engaged in combat operations simply because command and control of units included in warfare is essential.
http://militaryringexpress.com/blog/post/3428846