“We are examining the usage of ammunition in the war fought by Russia in Ukraine to make certain that our stockpiles prepared for possible future conflicts are sufficient,” U.S. Army Joint Chiefs of Staff president Gen. Mark Milley said Tuesday. Previously quoted by Politico, U.S. Army Secretary Christine Wormuth said the United States is expanding its production of 155 mm artillery ammunition from 14,000 rounds per period to 20,000 by spring next year and 40,000 by 2025.