Since Donald Trump’s first term, they have been viewed comfortingly as the “adults in the room,” a last line of defense against the impulsive whims of a president with access to the nuclear codes. Now – after an unprecedented wave of firings that has been compared by some to Stalin’s purges – the Pentagon top brass no longer seem like such a reliable bulwark. Since Trump returned to office in January last year, Pete Hegseth, the rumbustious defense secretary who has made it his mission to remake a military ethos he denounced as “woke”, has fired or forcibly retired 24 generals and senior comma