Civil War Ninjas
“So, then, on to your central thesis. I certainly can’t dispute your assertion that the presence of ninjas at Gettysburg would have altered the outcome of the U.S. Civil War. However, it is one thing to make this statement and quite another to claim that a clan of ninjas indeed was present and was, in fact, the force that tipped the balance of power in the war to the Union. Your evidence is… scanty.”
From Civil War Ninjas! The Tenth-Grade History Report (via Reenhead).