Revealing mistake: When Cleopatra rolls out of the rug, one can see it's Elizabeth Taylor's stunt double, who has a bigger and stronger build.
Revealing mistake: When Mark Antony jumps on the trapeze-shaped elevator, one can see it's Richard Burton's stunt double.
Continuity mistake: When the doctor explains to Cleopatra what epilepsy is, the white cloth on the box next to him disappears between shots.
Factual error: When Cleopatra is lying down and talking to Caesar, her flesh-coloured underwear is visible.
Revealing mistake: During the naval battle, a long rope runs from the side of a burning ship on the left, out offscreen, to keep it steady.
Answer: The people of higher rank would usually have more or better armor so in his case that would probably be extra armor for his legs and arms.