Complex sentence: In February 1863, he was appointed the first colonel of the 80th United States Colored Troops and was assigned to field duty in Louisiana, where he eventually took charge of a brigade of black troops and participated in the Siege of Port Hudson.
Split into simpler sentences: In February 1863, he was appointed the first colonel of the 80th United States Colored Troops and was assigned to field duty in Louisiana. There he eventually took charge of a brigade of black troops and participated in the Siege of Port Hudson.