During the second half of March 1864, a combined force from the Union Army of the Gulf and navy led by Major General Nathaniel P. Banks, supported by Admiral David Porter's fleet of gunboats, ascended the Red River with the goal of defeating the Confederate forces in Louisiana and capturing Shreveport. By April 1 Union forces had occupied Grand Ecore and Natchitoches. While the accompanying gunboat fleet with a portion of the infantry continued up the river, the main force followed the road inland toward Mansfield, where Banks knew his opponent was concentrating.