Most folks know that the Rottweiler was a "war dog" for the Roman military. It's not totally that simple. The dog we know today is likely an admixture of the Roman cattle-herding dogs (that kept army beef moving on its hooves), mastiff type breeds, and local sheepdogs around the Wurttemberg area of Germany, including the locality of Rottweil.
Despite bad press and worse owners on occasion, Rotties are great dogs -- my mother had and treasured one for years that was basically her extra child. The breed inspires great loyalty. . .
. . . and videos like this -- captioned in Spanish, and soundtracked with Rammstein's "Mutter."
Stick with it till the end though. There's puppies.