Snake Featherston
Banned
Washington = 450 guns over a frontage of 37 miles
Sebastapol = 326 guns over a two mile frontage (Sept. 1854) quickly rising to 540.
It should be clear that Sebastapol, a minor Russian city, was a much tougher nut than Washington. In fact Yorktown and Vicksburg had higher firepower densities than Washington. Early could probably have gotten inside the perimeter had he assault Ft Stevens, but the point was moot since he knew two infantry Corps had arrived to shore up the defenses.
Early had 24 hours before that Corps got there. Early was just a shitty general.