Trump wanted US military generals to emulate generals of the third Reich and treat him like he was Hitler:

It turned out that the generals had rules, standards, and expertise, not blind loyalty. The President’s loud complaint to John Kelly one day was typical: “You fucking generals, why can’t you be like the German generals?”
“Which generals?” Kelly asked.
“The German generals in World War II,” Trump responded.
“You do know that they tried to kill Hitler three times and almost pulled it off?” Kelly said.
But, of course, Trump did not know that. “No, no, no, they were totally loyal to him,” the President replied. In his version of history, the generals of the Third Reich had been completely subservient to Hitler; this was the model he wanted for his military. Kelly told Trump that there were no such American generals, but the President was determined to test the proposition.
https://www.newyorker.com/magazine/2022/08/15/inside-the-war-between-trump-and-his-generals

Trump, not a man known for his literacy, kept a book of Hitler’s speeches by his bed and would read it sometimes:

Ivana Trump told her lawyer Michael Kennedy that from time to time her husband reads a book of Hitler’s collected speeches, My New Order, which he keeps in a cabinet by his bed. Kennedy now guards a copy of My New Order in a closet at his office, as if it were a grenade. Hitler’s speeches, from his earliest days up through the Phony War of 1939, reveal his extraordinary ability as a master propagandist.
https://www.vanityfair.com/magazine/2015/07/donald-ivana-trump-divorce-prenup-marie-brenner

Then there’s this:

Donald Trump appears to take aspects of his German background seriously. John Walter works for the Trump Organization, and when he visits Donald in his office, Ivana told a friend, he clicks his heels and says, “Heil Hitler,” possibly as a family joke.

Trump seems to aspire to be Hitler-like, and he even tried to take supreme dictatorial power through populism, lies and propaganda like Hitler did.