In April 1864, Brigadier-General Henry Hunt sent recommendations and instructions to form a siege train supporting the Army of the Potomac’s next campaign. On the first day of May 1864, Colonel Henry Abbot sent an update on his preparations toward that end:
Fort Richardson, VA., May 1, 1864.
Brig. Gen. Henry J. Hunt,
Chief of Artillery, Army of the Potomac:
General: Yours of the 29th ultimo is received. I will at once make requisition for the sand-bags, as you suggest. I propose to take ten 8-inch siege howitzers. I have the following ordnance, and ordnance stores afloat at the present time, and the list is daily increasing: 4 ½-inch guns–18 guns, 20 carriages, 10 sets implements, 10 platforms, 3,600 rounds; 30-pounder Parrotts–2 guns, 10 carriages, 10 platforms, 2,600 rounds; 10-inch mortars–10 guns, 10 beds, 1,000 shells; 8-inch mortars–20 guns, 8 beds, 2,290 shells; Coehorns–1,900 shells; 1 battery wagon (D); 1 forge (A); 1 large sling cart; with many smaller articles. Every step has been taken to hurry forward the remainder, and it is loaded as fast as received. I have now 7 schooners, about 200 tons each.
Very respectfully, your obedient servant,
Henry L. Abbot,
Colonel First Connecticut Artillery.
Notice that Abbot chose to work with the slack Hunt offered in regard to the 8-inch siege howitzers (which Hunt accepted with reservations). Instead of forty 4 ½-inch siege rifles, the siege train contained a mix of 4 ½-inch and similar caliber 30-pdr Parrotts.
Hunt wanted 1,000 rounds per gun. But the number accumulated by May 1 fell far short of that goal. Hard to believe in the vast storehouses and magazines around Washington and Baltimore there were not many thousands of these projectiles. I would offer a similar observation about the battery wagon and forge. Far more was needed for a siege train of the size requested.
But with seven schooners to transport the siege train, Abbot had the means to deploy this force at almost any point in tidewater Virginia.
(Citation from OR, Series I, Volume 36, Part II, Serial 68, page 320.)