
Re: Woulda made the war much betterer
Jefferson Davis attempted to breed camels in the southwest as well, though I believe that was after the war. Apparently they took well to the environment but he didn't have enough of them to create a sustainable population. Again, a damn shame.
While they may have posed some strategic difficulties- having to provide for and transport the elephants- still, a herd of elephants could have provided an immense (literally)
tactical advantage for the Union army. Elephants have made fine mounts for the discerning cavalryman since before Hannibal's time.
Clutch had the right idea:

This would be period-correct for armaments:

And while this looks like it's WWI-era, the concept is, I feel, sound:

And certainly elephant cavalry, Indian elephants being suited to hot, muggy climes, would have helped keep the South in its place during Reconstruction.
Even outside of their implications for the Civil War, it's really a huge missed opportunity. We would have several generations of truly American elephants by now.