Isaac Robertson, Veteran of the Civil War Multi-Cache

You are seeking a two stage multi cache that begins at the grave of Isaac Robertson, Veteran of the Civil War.

Isaac Robertson

Private, Company D 2^nd Regiment Alabama Cavalry

His grandfather, Major James “Horseshoe” Robertson, was a soldier serving in the South Carolina Continental Line during the Revolutionary War. Although his grandfather’s rank was self-assumed, he was in fact a soldier fighting in the revolution. When Isaac was 6 years old, his grandfather died and was buried in a cemetery on the west bank of the Black Warrior River.

Isaac also served as a soldier, as a Private in Company D of the 2^nd Regiment of Alabama Cavalry. The company he mustered in with was made up of men from Tuscaloosa County, the regiment itself formed in Montgomery in 1862.

To locate the final, solve:

33 11.9AB

87 35.4CD

A = The second digit in the year of his death.

B = The first digit in the date of his birth.

C = The first digit in the date of his death.

D = Subtract 1 from the third digit in the year of his death.