If confirmed, Milley will replace the outgoing Joint Chiefs Chairman, General Joseph Dunford, as the country's chief military officer and chief adviser to the president.
He will take over the post at A time when the Trump administration faces a plethora of geopolitical threats, including mounting tensions with Iran and challenges from rivals such as China and Russia.
Perhaps the most noteworthy exchange with Milley was being asked by Sen. Angus King, one of Maine's independent, if he would be intimidated by anyone.
Milley replied bluntly, "Absolutely not, no one, never."
"I give my best military advice, it will be open, it will be honest, it will be strict and thorough and that is what I will do it every time," he said. King expressed Milley on the matter, stating that he is confident that the four-star general will enforce his views, even if they contradict the President's opinion, but it was important to emphasize this point.
"I think I think it's very important to emphasize that the Oval Office is an intimidating place." The President of the United States is the most powerful leader in the free world and ready to be, Mr. President. This is the consequence, if it is something he or she does not want to hear, there is no more important responsibility in your career that you had to make that statement, "King said.
"Senator, and I would say it applies to General Dunford and most of us who have seen much of the struggle we have buried these soldiers Arlington is full of our comrades, and we understand the dangers of our profession very well, we know what it is about, and do not be intimidated, make stupid decisions, "Milley replied.
"We will be our best military council, regardless of the consequences for ourselves," he added.
Previously, the Democratic Senator of Hawaii, Mazie Hirono, had asked Milley under what conditions he would resign from his position if his advice and advice on important political issues were not heeded.
"I think it was a function of something that was illegal, unethical or immoral, that's what I've come to since I was Second Lieutenant and that would probably lead to resignation," Milley replied he would expect the same from any US service member regardless of rank.
The interrogation prompted Republican Senator Tom Cotton to make a distinction between illegal and unwise order.
"So what the President should expect of you, what the Secretary of Defense should expect of you, what the nation Do you expect from you to always give your best military verdict?" Asked Cotton.
"That's right, always," Milley said.
Asked if he "will then enforce lawful orders, even if you do not personally agree with them or think they are ill-advised," Milley replied, "Definitely." Chiefs Chairman, sources say, " src-mini = "// cdn.cnn.com/cnnnext/dam/assets/171009150338-mark-milley-us-army-chief-of-staff-small-169.jpg" src-xsmall = "// cdn. cnn.com/cnnnext/dam/assets/171009150338-mark-milley-us-army-chief-of-staff-medium-plus-169.jpg "src-small =" http://cdn.cnn.com/cnnnext /dam/assets/171009150338-mark-milley-us-army-chief-of-staff-large-169.jpg "src-medium =" // cdn.cnn.com/cnnnext/dam/assets/171009150338-mark- milley-us-army-chief-of-staff-exlarge-169.jpg "src-large =" // cdn.cnn.com/cnnnext/dam/assets/171009150338-mark-milley-us-army-chief-of -staff-super-169.jpg "src-full16x9 =" // cdn.cnn.com/cnnnext/dam/assets/171009150338-mark-milley-us-army-chief-of-staff-full-169.jpg " src-mini1x1 = "// cdn.cnn.com/cnnnext/dam/assets/171009150338-mark-milley-us-army-chief -of-staff-small-11.jpg "data-demand-load =" not-loaded "data-eq-pts =" mini: 0, xsmall: 221, small: 308, medium: 461, large: 781 "/ >