The entire Chalmette Regiment was captured and paroled at Quarantine Station on 24 April 1862 by Farragut's vessels, except company D.[2] Company D of the Chalmette regiment, had been detached serving as artillerymen manning the floating battery "Louisiana" under Captain M.T.Squires and suffered one killed and two wounded during the battle of Fort Saint Phillip on April 26.

"[4] Colonel Szymanski made a statement on April 18, 1863 at the military court of inquiry assembled in Jackson, Mississippi, to investigate the fall of New Orleans, about the surrender of his regiment; "When the forts were passed, just about break of day, the fleet came upon my small camp and opened fire.

After losing some 30 men killed and wounded, without a possibility of escape or rescue- perfectly at the mercy of the enemy, he being able to cut the levee and drown me out- I thought it my duty to surrender.

When General Benjamin Butler arrived in New Orleans, the officers and men taken as prisoners of war, paroled, and those who did not take the oath to the United States, were exchanged on the 8th of October, and then being delivered to Confederate officials at Vicksburg.

While the majority took the oath, a number of the men who were paroled and exchanged, re-enlisted in Louisiana units on active duty in the Vicksburg area.