Was it Friendly Fire?

As you can read here, the Civil War has claimed another, perhaps it's final victim, 140 years after it ended. Civil War relic collector Sam White of Chester, Virginia, was killed in February when a cannonball he was restoring exploded, killing him in his driveway. The blast was so powerful that it sent shrapnel through the front porch of a house a quarter of a mile away.

The article doesn't mention if it was a Yankee or a S'uthern cannonball, so we don't know if the last victim of the Civil War was the result of "friendly fire" or not.