Why was the outcome of the battle of bull run surprising to northerners?

They were surprised because the inexperienced Union Troops had fled back to Washington and the Battle of Bull Run was a smashing victory for the south that had won by Jackson. To put it simply, they thought they were going to win.

Include the poem for more info but this is what i know about the goddess athena athena is a greek goddess of war and sprang from zeus head full grown in a full set of battle armor.