引用・参考資料等 https://www.quora.com/What-was-the-point-of-changing-the-Sherman-s-gun-from-a-75mm-to-a-76mmhttps://www.ww2armor.org/blog-discussion-forum/the-types-of-ammunition-fired-by-the-m18-gmc-hellcathttps://www.theshermantank.com/about/sherman-lee-and-variants-gun-data/75mm-m3-gun-information/
http://www.nicovideo.jp/watch/sm44346368
