The 2nd Louisiana Regiment (Corps d'Afrique) was indeed the first black regiment to be deployed against the Confederates in April 1863 at Ship Island, near Pascagoula, MS. Please recall that the Battle and victory at Port Hudson didn't come until later, culminating on July 9, 1863, five days after the Confederate surrender at Vicksburg.

Thanks for the opportunity to share a treasured bit of history.