What day of the week was August 5, 1861?

The day of the week August 5th, 1861 fell on was a Monday.

American Civil War: In order to help pay for the war effort the the United States government levies the first income tax as part of the Revenue Act of 1861 (3% of all incomes over US $800; rescinded in 1872). The United States Army abolishes flogging.