"Don't bump it, sir.

Settle down and ride steadily." Then, an instant later, just as Dodge was beginning to feel secure: "Gallop!" Dodge's wild mount gave a snort, then bolted.
"Whoa, you unruly beast!" roared Dodge.

Behind him rode the detachment, grimly merry, though with not a flicker of a smile showing.
Bert's horse pulled away, and bolted, with Dodge tugging at the bridle.
Greg, riding behind him, endeavored to bridge the gap.
"Steady, Mr.Holmes!" shouted the cavalry instructor.

"You may set the pace until Mr.Dodge regains control of his mount." Straight around the tan-bark went Dodge and his mount, until the animal was in danger of colliding with Haskins' mount.
"Hard on your off rein, Mr.Dodge! Swing out into the center and bring your horse down!" ordered Captain Hall sternly.
Bert managed to swing out of the line, but that was all.

He shot along on the inside, for the horse seemed to have a notion that it was racing the entire detachment, lap by lap.
"Have you utterly lost control of your horse, Mr.Dodge ?" shouted Captain Hall.
Plainly enough the young man had, for, at that moment, the beast, its mouth sore from the continued tugging against the bits, slackened its pace, then plunged on its forefeet, throwing its heels high in the air.
With a gasp of terror Dodge struck the tan-bark, one shoulder landing first.