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Democratic vice-presidential candidate Tim Walz's military record has been under scrutiny since he was announced as Kamala Harris's running mate.
Historic accusations made by some veterans have been revived by his opposite number, Republican JD Vance, who himself served in the military.
Mr Vance says that Mr Walz intentionally avoided combat in Iraq by resigning shortly before his unit was deployed there, and that he has been dishonest about his role in the military.
We’ve looked into his record and the military service of Mr Vance.