Ronald Reagan Appears at Private Dennis Reilley in "Sergeant Murphy"

Private Dennis Reilly has followed his horse, Sergeant Murphy, into the army and when Murphy is transferred to the cavalry, Dennis transfers also.

Because he wants the horse to be discharged from the army when his own enlistment is finished, Dennis coaches Murphy to act wild so he will not be considered a good cavalry horse. Col. Carruthers thinks Murphy has potential, however, and sends him back to school.