The building housing the Gettysburg Diorama (shown HERE) also features a bunch of smaller dioramas in glass cases. The figures in some of these are about 54mm, some larger, and in at least one case a lot larger. Most represent isloated events or encounters during the three-day battle, but since I failed to take notes, I can't tell you what they are. As before, I'm posting photos of each, with blow ups of details.
These first pics obviously depict General Lee, but where I can't say. His headquarters during the battle was a house, which is still there.