The Federals placed Osage orange branches all along the main line, in front of the breastworks, for obstruction. This osage orange tree is just west of the Carnton home. It was a witness tree to the battle.
Eric Jacobson excerpt (For Cause & For Country)
The Federal troops viewed the Osage as a potential barrier, and Stiles’ men began chopping it down to construct a crude but effective abatis. They knew the Osage branches, which were thorny and nearly impossible to break, would cause immense grief to anyone attempting to pass through them. The Indianans furiously hacked at the dense and tangled hedge to further shore up their position. One soldier said, “We went out in front and cut and twisted an osage orange fence till it was about impossible to get thru it.” There was so much Osage present that troops on the left of John Casement’s Brigade also put their axes and hatchets to work and began placing it in front of their works. By midmorning Stiles’ Indiana regiments had an impressive abatis stretched along their front, while Casement’s men constructed a more impromptu obstruction. Also, some of the Osage hedge was left lining both the pike and the railroad. An Indiana officer said some of the boughs were even “piled in the road,” apparently a reference to Lewisburg Pike.
Jacobson, Eric A.. For Cause and Country: A Study of the Affair at Spring Hill & the Battle of Franklin (Kindle Locations 4397-4404). O’More Publishing. Kindle Edition.