Button ID

I posted the pictures of the button on a metal detecting forum I regularly visit and one of the members ID'd the button insignia as the Transportation Corps for the U.S. Army. The insignia came into use in the 40's so the button isn't that old, but neat none the less. Here's a link to the website showing info on the Transportation Corps:

http://www.tioh.hqda.pentagon.mil/branches/Transportation.htm