But he didn't. That requires congressional action. The DoW is just a "secondary" name attached via executive order. Contracts still say DOD. The only reason people are saying "DoW" it is to appease certain forceful personalities.
I do wish there was even more resistance though, war has been effectively pitched as costless or even as a boon. Perhaps if this war bites there will be more resistance to future wars. At the very least the Iran war being such a disaster may have saved us from a more costly war with China - which the US was and in some ways still is gearing up for.
Where did I do that? There's no one to vote for that doesn't wage war.
But to say voting for Trump was voting for less war is plain ridiculous. You'd have to ignore his entire career. He is famously fickle, is not shy about lying, and abandons friends at the soonest opportunity. A rational person hearing him say "I will end the Ukraine war on day 1" would understand he's saying whatever he thinks sounds good.
Like you'd think Americans would have learned after "read my lips, no new taxes" even if they somehow memory-holed Trump's entire first administration. But I guess not.