Not in vain had they learned to be foot cavalry.

They pressed forward through the deep mud and always the roar of the increasing fire called them on.
Before them stretched the ridge and Harry was in fear lest the enemy spring forward and seize it first.
But no foe appeared in front of them in the fields, and then with a rush they were at the foot of the ridge.

Another rush and they had climbed it.

Harry from its crest saw the wide field of combat and he knew that the greater battle had just begun..