Donald Trump’s appointment of John Kelly as his Chief of Staff will probably work. Kelly is retired military, and Trump spent five of his most formative years in a military academy under a tight command structure. If anyone can inject some discipline into Trump and his administration, it would be a four star general.
For a while.
Until Trump starts remembering what he didn’t like about the academy and the military life. Like how his command was taken away from him when he was ‘promoted’ into an administrative position. And how he chaffed at the rules (but got away with breaking them).
That’s when he will fall back on the fact that as commander in chief he actually outranks a four star general. He’ll go back to shooting himself and his administration in the foot. At which point Kelly might quit. Because if there’s one thing that really annoys a military man, it is friendly fire.