When I was ten and began building models of tanks from WW2, I wished I could afford an Osprey book based on the vehicle or the battles it fought. The illustrated publisher's quick histories, full-color artwork plates, maps and photographs are unique and entertaining. They, more often than not, provide a great entry point to a particular piece of history (though sometimes the authors have more passion than expertise).
This particular work unveiled an aspect of the Battle of the Bulge that I was not entirely clear on. Hitler commissioned SS Commando Otto Skorzeny to create a special unit to disrupt and gain key points behind Allied lines. What made this unique is that they would pass themselves off as Americans wearing US uniforms and using US weapons and vehicles. What I did not know was that this largely failed and the unit was reconstituted into the overall attacking force which then supported Joachim Peiper's Kampfgruppe. I actually confused the massacre at Malmedy thinking that disguised Germans had carried it off but it was actually forward elements of the regular German force.
The work is interesting as it covers the attempt to hobble together English-speaking combatants from the German ranks while scrounging up captured equipment, how they reshaped the hulls of Panther tanks to resemble M10 tank destroyers, used specific markings so they were not engaged by their own troops, and it debates the cause of the Malmedy massacre. The author also disputes the now famous photography of Peiper supposedly checking his progress against a road sign as not being him (I have seen it referenced in so many works as him that this is very curious). Overall, there is decent detail and great photos.
I do worry about Osprey's format overall. They are pricey publications for their length and they need to rethink their offer in this digital world or may lose relevance.