Factual error: French commando Philippe Kieffer is wearing the ribbon of the Military Cross throughout the film. He was actually awarded the MC in July 1944, a month after D-Day.
Continuity mistake: The shadows in the scene with Lawrence sleeping on his camel are short because it's the middle of the day. In the next shot you see long shadows on the sand. When Ali wakes up Lawrence they are short again. (01:01:41)