The flood was upon them and overwhelmed them.

The German regiments were cut to pieces in an instant, and the demoralized survivors retreated into the mass.

Elsewhere a battery was manned and stopped for a moment the Southern advance, but only for a moment.

It, too, was overwhelmed by the Southern artillery which rushed forward, firing as fast as the cannoneers could load and reload.
Jackson himself was with his artillery, shouting to them and encouraging them, and Harry, trying to follow him, found it hard to keep clear of the guns.

The second and third lines of the Southern army pressed forward with the first, and the terrific impact overwhelmed everything.
The Northern officers showed supreme courage in their attempt to stem the rout.