John Kelly comes out swinging against Trump, says he fits 'fascist ...

John Kelly, a former four-star Marine general and former chief of staff to former President Donald Trump, hammered his old boss in a stunningly public fashion on Tuesday -- just two weeks before Election Day.

Kelly, who had previously refrained from discussing his time in the White House so openly, said in expansive interviews with The New York Times that Trump's discussion of using the military against the "enemy within" -- who, in Trump's words included Democratic foes -- pushed him to come forward. His comments come after several other prominent former administration officials, including those with military experience, expressed concern about Trump's fitness for office.

"And I think this issue of using the military on -- to go after -- American citizens is one of those things I think is a very, very bad thing -- even to say it for political purposes to get elected -- I think it's a very, very bad thing, let alone actually doing it," Kelly said.

The former general held nothing back, arguing that Trump could fit the bill of a "fascist."

"Well, looking at the definition of fascism: It's a far-right authoritarian, ultranationalist political ideology and movement characterized by a dictatorial leader, centralized autocracy, militarism, forcible suppression of opposition, belief in a natural social hierarchy," he told The Times.

"So, certainly, in my experience, those are the kinds of things that he thinks would work better in terms of running America," he added.

Kelly went on to explain that Trump had said he wanted generals like those that Adolf Hitler had, a comment that Kelly found shocking and told the former president not to repeat.

While Trump didn't specifically address the Hitler allegation, he did say "the story about the soldiers was A LIE, as are numerous other stories he told," in a post on his Truth Social platform, calling Kelly a "total degenerate."

"Even though I shouldn’t be wasting my time with him, I always feel it’s necessary to hit back in pursuit of THE TRUTH. John Kelly is a LOWLIFE, and a bad General, whose advice in the White House I no longer sought, and told him to MOVE ON!" Trump wrote.

The remarks from Kelly, while astounding coming from a veteran who attained such a high ranking in uniform, is just the latest to come from a former senior official in Trump's administration.

Mark Milley, a retired Army general and former chair of the Joint Chiefs of Staff under Trump, told journalist Bob Woodward that Trump is a "fascist to the core."

"He is the most dangerous person ever. I had suspicions when I talked to you about his mental decline and so forth, but now I realize he's a total fascist. He is now the most dangerous person to this country," he said.

Mark Esper, Trump's former defense secretary, said earlier this month that he feared Trump would use the military against his domestic critics and that he would likely have fewer guardrails in a hypothetical second term.

"My sense is his inclination is to use the military in these situations whereas my view is that's a bad role for the military. It should only be law enforcement taking those actions," Esper said on CNN.

"I think President Trump has learned, the key is getting people around you who will do your bidding, who will not push back, who will implement what you want to do. And I think he's talked about that, his acolytes have talked about that, and I think loyalty will be the first litmus test," he added.

Trump throughout his tenure has also praised authoritarians, including boasting of Russian President Vladimir Putin and Chinese leader Xi Jinping's intelligence, calling North Korean strongman Kim Jong Un "tough" and heaping praise on Hungarian leader Viktor Orban.

Trump's campaign has hit back at the former officials, including going after Kelly on Tuesday.

"John Kelly has totally beclowned himself with these debunked stories he has fabricated because he failed to serve his President well while working as Chief of Staff and currently suffers from a debilitating case of Trump Derangement Syndrome," spokesperson Steven Cheung said in a statement.

"President Trump has always honored the service and sacrifice of all of our military men and women, whereas Kamala Harris has completely disrespected the families of those who gave the ultimate sacrifice, including the Abbey Gate 13," he added, referencing the 13 service members killed during the U.S. withdrawal from Afghanistan.

The latest eye-popping comments from Kelly come as early voting is already underway and Trump and Vice President Kamala Harris fight for a small but significant slice of undecided voters.

The Harris campaign on Wednesday morning seized on Kelly's comments, rolling out Republican former military leaders to both hammer Trump and underscore the seriousness of Kelly's surprisingly public remarks.

"I had the honor of working aside him, and I know him speaking out this way was no small step for him," said Kevin Carroll, who served as senior counsel to Kelly when he was Homeland Security secretary under Trump.

Brig. Gen. Steve Anderson mocked the fact that Trump "couldn't qualify to be in the military -- he has 34 felony convictions -- so, how can we have the commander-in-chief be in charge of a military that he couldn't possibly join?"

Harris' campaign warned that voters should listen to those who have worked alongside Trump while he was president.

"The people who know him best are telling us Trump is unhinged and pursuing unchecked power that would put us all at risk. We should all listen," Harris campaign spokesperson Ian Sams said in a statement.

However, national debate over Trump's character has raged largely unabated since 2015, leaving Republicans skeptical the latest comments will make an impact with voters.

GOP pollster Robert Blizzard said it's "hard to believe this is going to be the 'ah, gotcha now' moment for Democrats."

"I have a difficult time believing there is a single voter that doesn't have a hard and fast opinion on Donald Trump. They've come to that conclusion themselves, and I can't imagine these people, who the average voter has never heard of, change that opinion," added a former senior Trump administration official.

Still, with less than two weeks to go until Election Day, both campaigns are clamoring for any edge they can get, even if only marginal.

"It's really hard to move the needle at this stage, but comments from people who have worked closely with Trump on a daily basis are more likely to move the needle than almost anything else," said Republican pollster Whit Ayres.