CTM: Shelling of the State House Letterbox Hybrid

Hours of Operation:
There are no hours of operation for any locations of this cache.

Historical Information:

At dawn on February 16, 1865, Union troops occupied the banks of the Congaree River opposite Columbia.  Finding that the bridge had been burned by retreating Confederates, Union cannons began to shell the city.  At about 9 a.m., Sherman arrived on this site and ordered the artillery battery of Capt. Francis DeGress to fire on the railway station and the granite State House under construction.  Today, stars mark the exterior walls of the State House where the cannon balls struck.

Cache Information:

This is it soldiers. We've had them pinned down, and now it's time to advance. We have batteries setup atop a nearby hill. Go there first, and let the commander there know to stop firing the cannons so your brigade can move in. The commander will be wearing all grey and black, a really square looking fellow. Ask him for today's date, the date we shelled the city. Use that date to find the location of your next checkpoint.
Add the two digits of the day together to get A
The last digit of the year is B
The second digit of the year is C
Add the first two digits of the year together to get D
Head to 33 59.ABA 02.CAD
By this point, you'll be deep in rebel territory, so be vigilant! From here head toward the river along the secret route we've discovered. As that route turns, continue North. You'll see the bridge above that the Confederates will be expecting us to cross, but instead, use the wooden bridge down here to throw them off.
On the other side of the bridge you'll find the outpost we've set up along the river. From that outpost, continue North toward the wooden ramp. Instead of going up the ramp, go off to the left of it instead. Beneath the ramp, just at the edge of the rocks, look up, and here you'll find the supplies we've left for you.
From there you're on your own. I know we can count on you!

Permission granted by: The River Alliance