Basic story... There's a Nazi lab. The Russians are closing in and uncover it. Who ya gonna call? Dr. Frankenstein! ... and his army. You know, like what the trailer showed you.
It's a found footage style feature. I didn't expect that, but it ends up working really great and builds tension, but doesn't take cheap stabs at scares. In fact, Frankenstein's Army isn't a scare picture; it's more of a shock and gore flick. Excellent creature design with the director assisting in all aspects of the film to create a truly new breed of horror, steampunk monster movie. It's got the gore you want, and a freshness that fans have been clamouring for without falling into the torture porn trap that might alienate fans or taking the easy route of CGI'ing the whole thing. Practical effects for practical horror fans.
NOTE: In case you have no idea what They Saved Hitler's Brain is enjoy this clip and stop saying that you've seen everything.