Not the best pictures to view of this set but I did include them in a dio I put together a couple of years back. Depicts Armistead leading his Virginians across the stonewall and over the wreck of Cushing's battery-I think at the time I was trying to capture the look of Troiani's immortal painting "High Water Mark"
Anyway the set you are enquiring about appears in the lower right of the first shot with one of the Rebs wearing a crimson blanket roll squatting on the stonewall. In the second shot they are both lower left and are suspended leaping over the wall by metal pegs on their legs locating appropriate holes in the stone wall. Good set and as Mike refers to somewhat difficult to find today.
Reb