During a Republican primary debate, Trump said that the military would follow his orders, even if the orders were criminal.

His remarks were,

“They won’t refuse. They’re not going to refuse me, believe me. Let me just tell you, if you look at the Middle East, they’re chopping off heads, chopping off the heads of Christians, and anyone else who happens to be in the way, they’re drowning people in steel cages, and he, he now, we’re talking about waterboarding…They then came to me, what do you think of waterboarding? I said it’s fine, and if we want to go stronger, I’ll go stronger, too. Because, frankly, that’s the way I feel.

 

Can you imagine, can you imagine, these people, these animals over in the Middle East, that chop off heads, sitting around talking, and seeing that we’re having a hard problem with waterboarding. We should go for waterboarding, and we should go tougher than waterboarding. That’s what I think, and, and, I’m a leader. I’m a leader. I’ve always been a leader. I’ve never had any problem leading people. If I say do it, they’re gonna do it. That’s what leadership is all about.

Trump has also said he would reimpose torture techniques, threatened to target enemy cultural sites, and pardoned US soldiers convicted of war crimes.

Politico – Trump: Military ‘won’t refuse’ my orders
Time – President Trump’s Illegal Military Orders
The Week – Donald Trump doubles down on torture, war crimes