Grover's losses in this affair, called the battle of Cox's Plantation, were 2 officers and 54 men killed, 7 officers and 210 men wounded, 3 officers and 183 men captured or missing; in all 465. To add to the reproach of this rough treatment at the hands of an inferior force, two guns were lost, one of the 1st Maine battery and one of the 6th Massachusetts, but without the least fault on the part of the artillerists.
After the close of the campaign Colonel Morgan was arraigned before a general court-martial upon charges of misbehavior before the enemy and drunkenness on duty, and, being found guilty upon both charges, was sentenced to be cashiered and utterly disqualified from holding any office of employment under the government of the United States; but Banks disapproved the proceedings, findings, and sentence on the ground that the evidence appeared to him too conflicting and unsatisfactory. "The execution of this sentence," his order continue, "is suspended until the pleasure of the President can be known." When the record with this decision reached the Judge Advocate-General of the Army at Washington, he sent it back to Banks with instructions that, as no sentence remained for the action of the President, the proceedings were at an end and Colonel Morgan must be released from arrest. This was accordingly done on the 26th of October, 1863.
Green puts his loss at 3 killed and 30 wounded, including 6 mortally wounded. The Union loss, he says, was "little less than 1,000; there were over 500 of the enemy killed and wounded, of whom 200 were left out on the field, and about 250 prisoners."
When, on the evening of the 14th of July, at Port Hudson, Banks received this news, he went at once to Donaldsonville to confer with Grover and Weitzel on the situation and the plan of campaign. It was agreed on all hands that it was inexpedient to press Taylor hard or to hasten his movements in any way until time should have been allowed for the light-draught gunboats to re-enter Berwick Bay and thus gain control of Taylor's line of retreat. In thus refraining from any attempt to avenge promptly what must be regarded as a military affront, the depleted ranks and the wearied condition of the troops were perhaps taken into account, and, moreover, it must have been considered to the last degree inadvisable to entangle the command in the dense swamps that would have to be crossed, after pushing Taylor prematurely back from the fertile and comparatively high lands that border the Bayou La Fourche. Then Banks continued on to New Orleans, where he arrived on the 18th, and renewed his pressure on the admiral for the gunboats; but, unfortunately, the gunboats were not to be had. Of those that had accompanied the army in the campaign of the Teche, only one, the feeble _Hollyhock_, had remained in Berwick Bay after the army descended the Red River, crossed the Atchafalaya, and moved on Port Hudson. The others, with the transports, had followed the movements of the troops and had been caught above the head of the Atchafalaya when the waters fell. Thus they had long been without repairs and not one of them was now in condition for immediate service. The water on the bar at the mouth of the Atchafalaya was now nearly at its lowest point, so that even of the light-draught gunboats only the lightest could cross. Accordingly it was not until the 22d of July that the _Estrella_ and _Clifton_ made their appearance in Berwick Bay and put an end to Taylor's operations.