He previously served as commandant of the National War College from 2023 to 2024.

[3] Previously, he served as the Director of Strategy and Plans at HQMC; Deputy Commanding General of the III Marine Expeditionary Force and Commanding General of the 3rd Marine Expeditionary Brigade from 26 July 2019 to 10 July 2020.

[4][5][6][7][8][9] Rock is a 1988 graduate of the United States Naval Academy.

[4] In April 2024, Rock was nominated for promotion to lieutenant general and assignment as the director of the Marine Corps Staff.

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