

@madflavors Apparently, it's army. The shirt is actually navy-styled, as contrasted to the other one of Spitfire laying out on an artillery barrel, where she's wearing a bomber jacket (Some may consider #NSFW: http://www.canterlot.com/gallery/image/1094-join-the-rea/). Note the artist's comments here: http://www.canterlot.com/gallery/image/1129-spitfire-pinup-two/