The Trace began as an Indian trade route and the American settlers expanded the path to an improved route of commerce.
There are quite a few original sections of the trace along the Parkway. Gen. Andrew Jackson & his Tenn. Volunteers ( that's where the Univ. of TN gets it's sports team name) marched down the Trace to fight the British at the Battle of New Orleans in 1815 .
Merriwether Lewis died at one of the roadhouses along the Trace on the way to Wash.DC.
Shiloh was the largest 2 day battle of the Civil War fought in April 1862. The Rebels under Gen. Albert Sidney Johnston pushed the Yankess back to the bluffs overlooking the Tenn. River on the first day.
This was the location of a mass grave of Southern soldiers
Gen. A.S. Johnston was the highest ranking Southern Gen. to be killed during the CW. he was shot in the leg and severed the major artery and he bled to death afterpreviously sending his surgeon to help wounded soldiers.
By the way, you can click on any picture to enlarge it and a 2nd time to magnify even more.