Character mistake: In the tent Djem reaches for food with his left hand. Totally a big no-no in the Arab and many other cultures! He would never lean on his right and leave his left arm - his unclean hand free.
The Luxury of Conscience - S2-E8
Character mistake: The Speaker calls on Lord George Bentinck as "the Honourable Member for Lincoln." He was actually the Member for King's Lynn.
Character mistake: In the scene where Captain Sobel is inspecting the soldiers at the beginning of the episode, he goes up to Sergeant Lipton and notices something wrong with his chevrons. Well, in that part, Sergeant Lipton is not standing correctly in the position of attention because he is sort of slouching and his head is in front of his shoulders and the correct position of attention is standing straight up and having your neck behind your shoulders. If he was in the real army, he would have gotten a punishment for not standing at the correct position of attention. (00:09:30)
Character mistake: Captain Quinn expresses not knowing what an "azimuth" is. The man is a pilot. What pilot would have never heard of an azimuth? (00:13:50)
Episode #1.1 - S1-E1
Character mistake: In the opening minutes of the first episode, as the Erasmus is struggling through a storm, Blackthorne is told that the boatswain is dead. He checks the corpse and then says, "Get the body aloft," which would entail carrying the deceased up the mast. The correct order would be "Get the body topside."