I enjoy their music. Discovered them a few years back and they were right up my alley. I have most of their stuff in my winamp playlist and a bunch of my favorites among my driving music. I really dig how they back up the historical shtick with high quality metal and epic vocals. Too many bands out there trying to make it off a gimmick alone, not putting enough work into the sound.
I think the first time I heard a Sabaton song was when I watched the following video of “40:1” (about the Battle of Wizna) at the 2012 Woodstock festival:
These guys are outstanding performers, and for some reason this particular song gets me a little choked up every time I listen. I imagine the Polish captain motivating his troops by saying "In the future, power metal bands will sing songs of our glorious bravery!"
I also recently discovered another remarkably similar band called Civil War, whose similarity turned out to be due to the fact that most of the band are former Sabaton members.