After the work upon the army gun battery, the mortar batteries and the trenches had been fairly commenced, I was transferred to the naval battery and took my regular turn, with Captain R. E. Lee, and Lieutenant Z. B. Tower, in superintending its construction. I was in charge of that work the day it opened its guns upon the fortifications of the city, having relieved Captain Lee that morning. Seeing him still in the battery, about the time the firing commenced, I asked him if he intended to continue in control; adding, "If so, I report to you for instructions and orders". He replied: "No. I am not in charge. I have remained only to see my brother, Lieutenant Sydney Smith Lee of the Navy, who is with one of the heavy guns. My tour of service is over. You are in control; and, if I can be of any service to you whilst I remain here, please let me know".

There had previously been a difference of opinion between Captain Lee and myself in regard to the dimensions that should be given to the embrasures. The Chief Engineer decided in favor of Captain Lee, and the embrasures were changed and made to conform to his views. In a very short time after the firing began one of the embrasures became so badly choked that it could not be used until the _debris_ could be removed. Hastily renewing the blindage of brush-wood that had been used to conceal the work from view of the enemy during the construction, the detail of engineer soldiers then on duty, in the battery, cleared the embrasure of the obstructions, removed the blindage, and the gun resumed its fire. Just after that incident, I asked Captain Lee what he now thought in regard to the proper dimensions for the embrasures. He replied: "They must be made greater when the battery is repaired to-night."

Company 'A', corps of engineers, U.S.A., 1846-'48, in the Mexican war — Part 19

The naval detachment had only forty rounds of ammunition; which was expended in about three hours, and the firing had to cease until the arrival of the next naval detachment. The latter when it came into the battery, had only forty rounds of ammunition and was to serve until relieved, the next afternoon by a third naval detachment.

Company 'A', corps of engineers, U.S.A., 1846-'48, in the Mexican war — Part 19

Before the ammunition of the first detachment was expended the embrasures were all in a very bad condition--the battery was almost entirely unserviceable; and before the second detachment arrived I caused the embrasures to be filled up, until the battery could be repaired that night and put in good condition for re-opening the next day.

Company 'A', corps of engineers, U.S.A., 1846-'48, in the Mexican war — Part 19