From Whitman's account, what probably happened at the battle?
A: The Union army fought the Confederate army to a tie.
B: The Union army was defeated and forced to retreat.
C: The Union army won the battle and took Manassas Junction.
D: The Confederate army had burned down the Long Bridge.
Look at the underlined sentences from the passage.
The defeated troops [started] pouring into Washington over the Long Bridge at daylight on Monday, 22 nd July . . . all the men with this coating of sweat and rain, now recoiling back, pouring over the Long Bridge — a horrible march of twenty miles, returning to Washington baffled, humiliated, panic-struck.
Remember that Walt Whitman was writing about the Union army. Whitman uses words such as "defeated," "humiliated," and "panic-struck" to describe the returning Union soldiers. The Union army was defeated and forced to retreat.