US President Donald Trump will announce a further drawdown of troops from Iraq, a senior administration official has told reporters.
That announcement on Wednesday will be followed by another one in the coming days on a further reduction in US forces in Afghanistan, the official said.
The decision comes as Trump, a Republican, faces blowback from a report that he allegedly made disparaging remarks about US war dead.
Trump is trailing Democratic rival Joe Biden in polls ahead of the November 3 election.
His announcement, and the timing of it, may be aimed at convincing voters that he is following through on promises to end what he has described as America's endless wars.
The United States has around 5200 troops who were deployed in Iraq to fight the Islamic State militant group.
A US official, speaking on condition of anonymity, said last month the US was expected to reduce the number of its troops in Iraq by about a third in the coming months.
The US currently has about 8600 troops in Afghanistan. Trump said in an interview with Axios released last month the US planned to lower that number to about 4000.