https://www.defensenews.com/digital-show-dailies/2023/03/28/us-army-eyes-six-fold-production-boost-of-155mm-shells-used-in-ukraine/#:~:text=The%20Army%20is%20spending%20%241.45,Force%20Symposium%20in%20Huntsville%2C%20Alabama.

米国は2028年までに月85000発(年102万発)の155mm弾生産を計画