自問自答，找到以下網址有段說明
http://www.blockbuster.com/catalog/...hannel=sub#Cast
Ian Toynton's adaptation of Piece of Cake comes to DVD with a standard full-frame transfer that preserves the original broadcast aspect ratio of 1.33:1. The English soundtrack is rendered in Dolby Digital Stereo. There are neither subtitles nor closed-captions on this release. There are no supplemental materials of any consequence, but this BFS release should be of interest to any war drama enthusiast. ~ Perry Seibert, All Movie Guide


唉，日版很貴咧........