Jacob Zeilin: First Brigadier General Commandant in USMC History
March 2, 1867 in Marine Corps History
Posted on 3/2/2026
On March 2, 1867, Jacob Zeilin, who had served as Colonel Commandant of the Marine Corps since June 30, 1864, was promoted to Brigadier General Commandant, the first time Congress authorized this rank for the Marine Corps. This statute was repealed in June 1874 so that the rank of Commandant would revert to colonel upon Zeilin's retirement.
*Image info: Jacob Zeilin (U.S. government photo/released)
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