Continuity mistake: When Maximus pulls a knife out of Commodus' neck, it's much smaller that it was before.
Continuity mistake: When Maximus is on the cart and the slave treats his wound, it's on his right arm, but in the line up with Oliver Reed, there is nothing on his right arm.
Suggested correction: The mark on his shoulder is there, but it's in shadow most of the time, so it's difficult to see. It can be seen just as his shoulder appears on screen at the 36-second mark of this YouTube clip. https://www.youtube.com/watch?v=ut7Df7ttMoE.
Revealing mistake: In the opening battle, it's quite obvious in close-up the arrows shot by the ballistae (war machines) can't really be travelling more than a few yards at most, not the great distance they're supposed to be flying and which real ballistae could manage.
Continuity mistake: In the Gladiatorial fight scene in Morocco, Maximus throws one sword with his right hand into the stand, still holding a sword in his left hand. The next instant long shot of him shows the remaining sword in his right hand as he taunts the crowd with "Are you not entertained?"





