Former national security adviser H.R. McMaster has signed a book deal, according to publisher HarperCollins.
McMaster, who served as national security adviser after Michael Flynn was fired in 2017, resigned from the post in April.
He is scheduled to release “Battlegrounds” in 2020.
The book from the three-star general will focus on his 34 years in the Army and tenure in the Trump administration.
President Trump was reportedly at odds with McMaster at the end of his term as national security adviser. Trump replaced McMaster with former U.S. Ambassador to the U.N. John Bolton.
McMaster, in a statement with HarperCollins, said he’s “looking forward to researching and writing about the greatest challenges to the free world and how we can work together with like-minded nations to seize opportunities, defeat threats to security, and preserve our way of life.”
Financial terms for the book were not disclosed.
McMaster previously penned “Dereliction of Duty: Lyndon Johnson, Robert McNamara, The Joint Chiefs of Staff, and the Lies that Led to Vietnam,” which was also published by HarperCollins in 1997.