I just got this in today. It’s both of the Iron Army sets from TFC. They are meant as an upgrade to the Transformers Power Core Combiners. They have a WWII theme, and when combined with Bombshock they make him appear quite like Bruticus. The last picture shows the upgraded version on the left, and the stock Hasbro version on the right.
Overall I like this set. It’s quite an improvement over the drones that the PCC come with. I wish Hasbro would have made them proper combiners from the begining. My only real complaint is that he doesn’t come with a weapon for the combined mode. A nice rifle would have made this guy look much better.