He is almost an ideal cavalryman--dashing, reckless; riding with a smile on his lips into the thickest of the fray, absolutely careless of life when his blood is up.
"There is another sort of courage, that which supports men under long continued strain, and enables them, patiently and steadfastly, to face death when they see it approaching step by step.

I doubt whether Forster possesses that passive sort of courage.

He would ride up to a cannon's mouth, but would grow impatient in a.

square of infantry condemned to remain inactive under a heavy artillery fire.
"No one has changed more since this siege began than he has.

Except when engaged under a heavy fire he has been either silent, or impatient and short tempered, shirking conversation even with women when his turn of duty was over.