The group, called Former Republican National Security Officials for Biden, launched in August with 70 members. The new endorsements will bring it to nearly 130 individuals who have publicly broken with the Republican president, including seven who served under Trump, people familiar with the effort said.
Others worked as senior defense and security officials in the administrations of Republican Presidents Ronald Reagan, George H.W. Bush and George W. Bush.
Retired Army General Stanley McChrystal, the former commander of U.S. troops in Afghanistan, also endorsed Biden on Thursday during an interview with MSNBC.
McChrystal, who resigned in 2010 after a Rolling Stone article quoted him making unflattering remarks about Biden and other civilian officials, said he always respected Biden and the incident was “more smoke than fire.”
