It's tempting to say a lot of Caesar's battles as he depicted them didn't take place, but he couldn't twist the facts too far. There were many men under his command, and if too many of them told differing stories about the wars in Gaul compared to his De Bello Gallico upon returning home it would be politically risky. Though likely, many details were twisted to make things more spectacular and dramatic.

Best piece of propaganda written, methinks.