Thought the b/w photos in the OP really capture the design features of this structure. (Believe the house was built by slave labor about 2 or 3 years prior to the war).
On Nov. 18, '63, there was heavy fire coming from 8 to 10 Confederate sharpshooters positioned inside the Armstrong/Bleak House who were pouring shots on B-G William Sanders's small force of Union troops defensively posted in a line opposite to hold back an advancing larger enemy force.
Sanders is widely believed to have been mortally wounded on that day by a shot fired by one of the several riflemen (some of whom were armed with whitworths) perched in the upper tower of this house.
In consequence, the rifled guns (consisting of four 20-pounder Parrotts) of Lt. Samuel Benjamin's Co. E, 2nd. U.S. artillery targeted the house at maximum range. One fired shot, at least, shattered the brick wall of the house, causing the Southern riflemen within to scurry and scatter.
Am uncertain though whether the three men sketched above on the tower wall were actually casualties of Federal artillery or infantry rifle fire.
If only those house walls could speak.