Broadsword calling Danny Boy

I have watched I Where Eagles Dare (Brian G. Hutton, 1968) a few times already, but made a memo to watch it again because I reckon it was Steven Spielberg who recently listed it as the best war movie of all time. And it's always cool to come back to classics. Clint Eastwood and Richard Burton killing nazis, flushing out double agents and bromancing in a nazi occupied castle.