Battle of Vermillion Bayou
1863 CE.
Shown on the map at 30.195°, -92.014°.
The Battle of Vermilion Bayou or Battle of Pinhook Bridge was fought on April 17, 1863, the third battle in a series of running battles between Union Major General Nathaniel Prentice Banks and Confederate Major General Richard Taylor. The battle was fought after both the Battle of Fort Bisland and the Battle of Irish Bend. On October 9, 1863 a skirmish with Confederate & Federal cavalry occurred at the same location.
Text from the Wikipedia article Battle of Vermilion Bayou, licensed CC BY-SA 4.0.