The Shiloh set is the same set as both Chickamaugua and Antietam for the artillery, cavalry and infantry 3D icons so they should work in the other two.
However there may be some problems with units with the wrong flags due to a lack of standardization in the oob's of the various games by the designers with some of them using the same id for unit pictures and 3D icons for both sides. Since their pictures are black and white and their graphics don't include flags it isn't a problem for them.
Gen. Ken Miller
1/2/VI
AoS
