Every man at arms… or capable of bearing them… kneel! On your knees! Be without fear in the face of your enemies. Be brave and upright that God may love thee. Speak the truth even if it leads to your death. Safeguard the helpless. That is your oath. And that is so you remember it. Rise a knight. Rise a knight!
According to BodyCounts.com (which counts just onscreen killings, not numbers killed in planet explosions), the movie with the largest body count is The Lord of the Rings: Return of the King (2003) 836. Runners-up are Kingdom of Heaven (2005) 619, 300 (2007) 600, Troy (2004) 572, and The Last Samurai (2003) 558.