From the Background: "On March 23, 2020, the U.S. Marine Corps (USMC) announced a major force design initiative planned to occur over the next 10 years. The Marine Corps aims to redesign the force for naval expeditionary warfare and to better align itself with the National Defense Strategy, in particular, its focus on strategically competing with China and Russia. The Marines intend to eliminate or reduce certain types of units and eliminate some military occupational specialties (MOS). The Marines also plan to reorganize higher echelon Marine formations and get smaller--reducing forces by 12,000 personnel by 2030."
CRS Insight, IN11281
Congressional Research Service: https://crsreports.congress.gov/