Maybe, but Patton's family was originally from Virginia. Since Mitchell's father served in the Civil war on the Union side, it would probably be a good bet that his son would remain loyal. Especially, since the relationship with France, wasn't good in the timeline 191 world.
Patton may have sided with MacArthur, but it looked like he was less hostile towards Truman than MacArthur was in the OTL. He was actually willing to listen to Truman, and offered alternatives that were actually logical.
I believe the the camps in Texas were named Determination, which was finally capture by Dowling's 11th Army, and Humble, which was turned over to U.S. forces by Texas Rangers when Texas seceded from the Confederacy. Both were commanded by Pinkard. The death camp in Louisiana that Pinkard...
Don't forget about the attempt during the 1936 Richmond Summer Olympics. When a hotdog vendor almost killed him, but was stopped by Clarence Potter. Who was their to Featherston himself, and the only reason he shot the the assassin was to keep the guards from killing innocent bystanders.
I believe the Confederate version of the Medal of Honor was known as the Southern cross. Also the Naval equivalent of the Order of Lee was the Order of Virginia, which has a depiction of the ironclad C.S.S. Virginia.