It clogged Dick's throat.

It stung and burnt him like powder.

Often it filled his eyes so completely that for a moment or two he could not see the blaze of the cannon and rifle fire, almost in his face.
But as they fell back he felt again that sensation of actual physical pain, although he was still untouched.

Added to it was an intense mental anguish.

They were failing! They had been driven back! They had not crushed Jackson! He forgot all about Colonel Winchester, and his comrades Warner and Pennington.