US President Donald Trump is changing the name of the Department of Defence to the Department of War, the White House announced, insisting the rebrand will project a more powerful image.
While the department's official name is set in law, Mr Trump in an executive order is authorising use of the new label as a "secondary title" by his administration, a White House document said.
Defence officials are permitted to use "secondary titles such as 'Secretary of War,'...in official correspondence, public communications, ceremonial contexts, and non-statutory documents within the executive branch," according to the document.
It was not immediately clear when Mr Trump planned to sign the order, but his public schedule for today said he would be signing executive orders in the afternoon as well as making an announcement in the Oval Office.
The president, a marketing-savvy real estate developer, has repeatedly said in recent weeks that he was mulling such a change.
Late last month, the 79-year-old Republican claimed the department's title was too "defensive".
The Department of War "was the name when we won World War I, we won World War II, we won everything," he told reporters on 25 August.
According to the White House document, the name change "conveys a stronger message of readiness and resolve".
Established in the early days of US independence, the Department of War historically oversaw US land forces.
A government reorganisation after World War II brought it along with the US Navy and Air Force under the unified National Military Establishment, which in 1949 was retitled to the Department of Defence.
"Restoring the name 'Department of War' will sharpen the focus of this Department on our national interest and signal to adversaries America's readiness to wage war to secure its interests," the White House document said.
The move is the latest overhaul at the Pentagon since Mr Trump took office in January and appointed former Fox News host Pete Hegseth to lead the sprawling department.
Mr Hegseth, a combat veteran, has repeatedly touted the push to restore a "warrior ethos" in the department, and has lambasted prior administrations for policies he and Mr Trump have derided as "woke".
While Mr Trump's order could potentially be rescinded by a future president, it "instructs the Secretary of War to recommend actions, to include legislative and executive actions, required to permanently rename" the department, the White House document said.
