Sen. Tom Cotton, R-Ark., blasted anyone within the Defense Department working to safeguard certain norms or policies that they expect the incoming Trump administration to target. 

"It appears that partisans and obstructionists inside the Department of Defense are laying groundwork to defy or circumvent President Trump’s plans for both military and civil-service reform," Cotton wrote in a letter to Defense Secretary Lloyd Austin in reference to reports of such strategizing among DOD employees. 

"These actions undermine civilian control of the military and our constitutional structure of government."

Earlier this month, it was reported that there were "informal discussions" occurring among Pentagon officials on what the department would do if Trump ordered the military for a domestic purpose or if he fired a significant number of employees, per CNN. 

One anonymous defense official was quoted in the report saying, "Troops are compelled by law to disobey unlawful orders." 

"But the question is what happens then – do we see resignations from senior military leaders? Or would they view that as abandoning their people?" they reportedly asked. 

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President-elect Trump promised during his campaign to shake up the federal government, whether it be through staffing changes or reorganization. Some reports have indicated specific people are being looked at for termination once he enters office again. An ally of Trump, former presidential candidate Vivek Ramaswamy, has been vocal about his belief that the federal government must be shrunk in size. 

Ramaswamy has been tapped by Trump, along with billionaire business magnate Elon Musk, to lead his planned Department of Government Efficiency (DOGE) in his new administration. The proposed department has the goal of reducing the size of government, cutting spending and increasing efficiency. 

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Cotton criticized Lloyd in his letter for "promulgating false claims that the incoming administration plans to arbitrarily fire uniformed leaders." 

Further, he slammed the secretary for a message after the election that the military would specifically follow "lawful orders" from Trump. Cotton said this was "a thinly veiled and baseless insinuation that President Trump will issue unlawful orders."

"I have to observe that these actions and reports only prove the need for reform and fundamental change at the Department of Defense. And, of course, while inappropriate and annoying, these tactics are also useless because no action by the outgoing administration can limit the incoming president’s constitutional authority as commander-in-chief," the Arkansas Republican wrote. 

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Cotton was recently elected to serve as chairman of the Senate Republican conference in the new Congress. He is also expected to take Florida Sen. Marco Rubio's place as the head of the Senate Select Committee on Intelligence. 

The DOD did not immediately provide comment to Fox News Digital for purposes of this story.