Battle Of The Sink Hole

Photo From An Adjacent County Of The Sink Hole Site

From Wikipedia:

The Battle of the Sink Hole was fought on May 24, 1815, after the official end of the War of 1812, between Missouri Rangers and Sauk Indians led by Black Hawk. The Sauk were unaware, or did not care, that their British patrons had signed the Treaty of Ghent with the U.S.

The most famous of these expeditions was that made in 1814 by a company of mounted rangers raised by Peter Craig of Cape Girardeau county. Many of the members of the company had served under Captain Ramsay in 1813; they were now enlisted for a period of one year to serve on the frontiers of Missouri and Illinois, and they became a part of a regiment commanded by Colonel William Russell.

After the company was organized...it was sent to North Missouri and while there fought the battle of the Sink Hole (Lincoln County, near Cape au Gris). [Source]

Source

Fort Cap au Gris

Fort Cap au  Gris was also called Fort Independence and Capo Gray...

From Campbell's gazetteer of Missouri: from articles contributed by prominent ...

Capo Gray should be Cap au Grés. This is another French term that lent itself to conversion by Americans into an English phrase of similar sound but different meaning. Even the French fell into the habit of rendering the name Cap au Gris mistaking grés, a noun meaning sandstone, for the adjective gris meaning gray.  Fort Independence was one of the many temporary stockades erected in St Charles County during the war of 1812. It is probably the same defence that is mentioned by Shaw under the name Fort Cap au Gré. [Source]

The Battle of the Sink Hole occurred after the official end of the War of 1812, near Cap au Grés.