Official Records of the Rebellion

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No. 20.

Reports of Brig. Gen. John G. Barnard, U. S. Army, Chief Engineer Army of the Potomac, of operations during the siege.

MEMORANDUM OF BATTERIES—NO. 2.

The commanding general directs the following changes for batteries:

Battery No. 5 to be enlarged to receive two more 20-pounder Parrotts, making 8 in battery.

Battery No. 3 to receive one additional 20-pounder Parrott, for which there is space already.

Battery No. 10 to receive additional siege guns, making eight siege guns and three 100-pounder Parrotts.

Battery No. 1 to receive the additional 200-pounder Parrott.

These changes, with those fixed by memoranda of April 28 and 29, will constitute the batteries as follows: Two 200-pounder and five 100-pounder Parrotts (one 200-pounder Parrott not arrived, the other in battery).

Battery No. 1, distance to Gloucester fort 5,025 yards; distance to Yorktown wharf 4,820 yards, and distance to big gun 3,810 yards.

Battery No. 2 (right wing nine siege guns, three 4 ½ Ordnance, six 30-pounder Parrotts, and left wing six 20-pounder Parrotts), distance to Yorktown front 1,850 yards, and distance to exterior redoubts 1,800 yards.

Battery No. 3 (seven 20-pounder Parrotts), distance to exterior redoubts 2,000 yards, and distance to Yorktown front 2,300 yards.

Battery No. 4 (ten 13-inch mortars). distance to Gloucester fort 4,100 yards, bearing N. 28° W.; distance to Yorktown wharf 3,400 yards, bearing N. 43° W.; distance to big gun 2,400 yards, bearing N. 49° W.; distance to right redoubt 3,100 yards, bearing N. 77° W.; distance to Red Redoubt 3,360 yards, bearing N. 86° W., and distance to work at Wynn’s Mill 4,900 yards, bearing S. 52° W.

Battery No. 5 (eight 20-pounder Parrotts), distance to Red Redoubt 1,575 yards; distance to right redoubt 2,000 yards, and distance to Yorktown front 2,800 yards.

Battery No. 6 (five sea-coast 10-inch mortars), distance to Gloucester fort 5,100 yards, bearing N. 3° E.; distance to Yorktown wharf 3,900 yards, bearing N. 5° W.; distance to Yorktown front 2,775 yards, bearing N.; distance to exterior redoubts 2,050 yards, bearing N. 32° W., and distance to Wynn’s Mill works 2,500 yards, bearing S. 45° W.

Battery No. 7 (six 20-pounder Parrotts, if it be had), distance to Wynn’s Mill works 1,100 yards.

Battery No 8 (six 20pounder Parrotts), distance to Wynn’s Mill works 1,125 yards.

Battery No. 9 (ten 10-inch siege mortars), distance to Yorktown front 1,910 yards, bearing N. 20° W., and distance to exterior redoubts 2,000 yards, bearing N. 70° W.

Battery No. 10 (seven siege guns and three 100-pounder Parrotts), distance to Gloucester fort 3,400 yards; distance to Yorktown wharf 2,550 yards; distance to Yorktown front 1,500 yards, and distance to right redoubt 2,150 yards.

Battery No. 11 (four or five sea-coast 10-inch mortars) distance to Gloucester fort 4,700 yards, bearing N. 9° W.; distance to Yorktown wharf 3,650 yards, bearing N. 17° W.; distance to Yorktown front 2,500 yards, bearing N. 18° W.; distance to exterior redoubt 2,400 yards, bearing N. 52° W., and distance to Wynn’s Mill 3,300 yards, bearing S. 52° W.

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Battery No. 12 (ten mortars; at present it is proposed to put in five 10-inch and five 8-inch mortars), distance to Yorktown front 1580 yards, bearing N. 20° W.; distance to exterior redoubt 1,900 yards, bearing N. 78° W., and distance to Burnt House 925 yards, bearing N.9°E.

Battery No. 13 (left wing, three siege guns, 30.pounder Parrotts, directed at gorge of right redoubt; distance to Red Redoubt 2,590 yards, and distance to right redoubt 2,100 yards; right wing four siege guns, directed 5° N. of hospital; this wing will embrace the whole Yorktown front, and a change of embrasures of 15° will bring it to bear on Gloucester fort, in all, seven 30-pounder Parrotts), distance to big gun 1,250 yards; distance to left salient of Yorktown front 1,625 yards; distance to Yorktown wharf 2,300 yards, and distance to Gloucester fort 3,100 yards.

Battery No. 14 (three 100 pounder Parrotts and one 100-pounder James, embrasures to be arranged to sweep from big gun to Gloucester fort), distance to big gun 1,400 yards; distance to Yorktown wharf 2,450 yards, and distance to Gloucester 3,150 yards.

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