Anyone interested in history, and especially World War 2, will find this compelling viewing. While we are aware of some of the mega weapons invented by the Nazis (e.g., the V2, the Bismarck, the Panzer) this show goes into great detail about each of the weapons and weapon systems. We learn not merely about the weapons, but their comparative value as well as their development, including costs, man power (often slave labor), and their priority within the political arena.
Even more interesting, there are on-site investigations of sunken ships (the Tripitz), abandoned manufacturing depots (the Panzers), re-modeled dry docks, etc. They have "battlefield archaeologists" and weapons experts and historians to bring you through every aspect of the show.
The only real fault is the guy who plays Hitler. Otherwise this is a great show.