Super Overrated movie. The premise is good, but the execution is very poor. Out of the like 7 special agents sent to the castle, only Clint Eastwood and Richard Burton are actually relevant. The others aren’t even named, and they get captured and you never see them again within the first like 20 minutes. The plot is extremely convoluted and messy, I still don’t understand it, Richard Burton is like a Quadruple agent it’s ridiculous. Typical 1960’s trope of turning women into sex objects, it would be better if women where just completely absent instead of the typical double-crossing, manipulative, promiscuous wh*re. Action can be really good like when Eastwood & Burton escape from that car, that was amazing. Besides that, action is nothing special, either infinite ammo MP-40 or a ridiculous amount of unnecessary explosions as a cheap way to keep the audience entertained. Not worth your time if I’m honest. Could’ve been really good but no it isn’t. If you want a similar style WWII Clint Eastwood movie that’s actually good then I would recommend Kelly’s Heroes.