The Battle of Bull Run, the first major land battle of the Civil War, did not go as the Union Army had expected. From the viewpoint of northerners, the battle would be a quick lesson that would send the rebels running faster than cheetahs chasing an antelope.

Many civilians even picnicked on nearby hills in anticipation of witnessing the certain victory and humiliation of the Confederates. But the result was far different, and it was the Union soldiers who ran, scattering the picnickers on their way.
What is wrong with the analogy between the rebel soldiers and cheetahs?
1 People cannot be expected to run as fast as cheetahs do.
(2 The rebels were expected to run from other soldiers, not cheetahs.
3 The cheetahs are chasing prey, while the rebel soldiers are being
pursued.

4 The comparison between rebels and cheetahs implies a level of agility and speed that may not accurately represent the rebel soldiers.