Note: This is a different series from “Ancient Rome: The Rise and Fall of an Empire” (which is made by the BBC).
There aren't too many documentaries out there about ancient history …
If you've ever looked online for movies about ancient history, you've probably had a hard time finding any. Ancient history isn't a popular subject for Hollywood movies (or even documentaries), and so very few programs about it have ever been made. I don't know why this has been the case, but I can probably make some guesses about it. If you make a documentary about World War II (a modern topic), you have access to actual archival footage from the period. You can get it at very low cost, and advertise its benefits to your viewers. Some of them will even prefer the gritty realism of the actual footage to re-enactments, which are just educated guesses (albeit good ones, if they're done right). Thus, you can sometimes get more effectiveness for less money, which is a real advantage in the world of documentaries. But if you depict the distant past, you are usually forced to rely on re-enactments, and the cost of these re-enactments can be steep. Consequently, many of these ancient history documentaries are never made in the first place.
This documentary is primarily a military history
An ancient history topic must thus be fairly popular before a for-profit network like the History Channel will decide to throw significant money at it. No matter how much the producers of these networks might like these topics, they usually can't justify the budget for these programs unless they think that they have a reasonable chance of recovering these expenses with some added cash flow. One presumes that the Roman Empire was considered popular enough to justify these budgets to investors at this time. If it had not been, after all, it's safe to assume that this series would never have been made. I imagine part of its appeal to the general public was its focus on military history (rather than other kinds of history). Military history has long been a popular topic with certain segments of the general population (perhaps especially the male population); and although political history is sometimes covered here, the primary focus of this series is military history. This may be the most comprehensive military history of Rome ever made for television. It has some weaknesses (which I will note later), but it's still a fine series despite these.
Relief scene of Roman legionaries marching, from the Column of Marcus Aurelius – Rome, Italy, 2nd century AD










