NARRATOR: There is a rich history behind the terms used by those who conduct war. Consider "cavalry:"
On Earth, warriors on horseback played a significant part in the rise of numerous empires.
unknown (voiceover): That hole isn't staying plugged!
NARRATOR: Cavalry had such an impact upon terran warfare that the term remained in use far longer than the horse did.
MURTAUGH (voiceover): Regroup! We'll go over the side again!
NARRATOR: Fleets of armored limousines might be "cavalry corps," tank divisions were often called "armored cavalry," and "orbital cav" patrolled lunar skies.
NARRATOR: In popular entertainment, "cavalry" became synonymous with rescue of some sort.
UTCHI-SKAFATKA (voiceover): Unwise, Captain. J.S.C. weapons below are trained on all available egress.
MURTAUGH: We landed in their killbox?
UTCHI-SKAFATKA: We did. I am sor... No, belay that.
Heads down! Cavalry incoming!
NARRATOR: We might ask what the ancient warriors would think of modern units bearing the name they made famous.
NARRATOR: Sergeant Schlock has no horse, no armor, and no sword, but even the mightiest Mongol horse-warrior would see in him a fit heir.