US Defense Secretary Pete Hegseth has asked General Randy George to retire immediately, sparking a row amid escalating tensions with Iran.
Gen. George, the Chief of Staff of the United States Army, was appointed in 2023 and his term would have ended in 2027.
The decision comes as the US is preparing for potential attacks on Iran, with more troops traveling to the Middle East for a potential ground mobilization.
It is unclear what prompted the decision, but sources cited concerns over Gen. George's ability to carry out Donald Trump's plans for the US Army.
Gen. George has significant deployment experience in the Middle East and Afghanistan, and has seen a stellar rise within the US Army under President Joe Biden.