This Day In History, June 18, 1872 – Fort Sykes Becomes Fort Cross. . . .  from the 125th Anniversary Calendar of Jamestown History & Fortwiki.com.

Camp Sykes (Jamestown) officially becomes Fort Cross and is established by Special order No. 80 from the Headquarters Department of the Dakota in St. Paul Minnesota.

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The fort was initially named Camp Sykes after Colonel George Sykes, 20th U.S. Infantry and later designated Fort Cross after Colonel Edward E. Cross, 5th New Hampshire Volunteer Infantry, who was killed at Gettysburg, 2 Jul 1863.   Finally, on 9 Nov 1872, the name was changed to Fort Seward after William H. Seward, Secretary of State under President Lincoln.  Abandoned in 1877.