I originally posted this in September. You need to reread these two for Friday.
Today (September 17, 2012) is the 150th anniversary of the Battle of Antietam (Sharpsburg) in the US Civil War, the single bloodiest day in the entire conflict, and first thing close to a victory that the Union forces had won during the entire conflict. President Abraham Lincoln used this day to announce his intention to declare the emancipation of slaves who were held in areas that continued in rebellion against the Union government.
Please click on this link to read about reflections upon this singularly bloody day.
This link is also an interesting take on the significance of this event.