Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE’s presidential campaign rolled out the endorsement of two retired four-star generals Thursday morning as she seeks to frame GOP rival Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE as a danger to the U.S.

ADVERTISEMENT

Both Gens. Bob Sennewald and David Maddox said they have never endorsed a candidate, but felt compelled to speak out this year.

"Having each served over 34 years and retired as an Army 4-star general, we each have worked closely with America’s strongest allies, both in NATO and throughout Asia,” the two said in a joint statement.

“Our votes have always been private, and neither of us has ever previously lent his name or voice to a presidential candidate. Having studied what is at stake for this country and the alternatives we have now, we see only one viable leader, and will be voting this November for Secretary Hillary Clinton."

Maddox previously served as the Army’s commanding general in Europe, while Sennewald led the U.S. Army Forces Command.

Clinton, a former secretary of State, has rolled out a slew of former national security leaders from both sides of the aisle as she tries to frame her campaign as the only viable option to keep America safe. Those endorsements include one from Gen. John Allen, who led U.S. forces in Afghanistan and served as a special envoy to President Obama on the threat from the Islamic State in Iraq and Syria (ISIS) terror group.

Thursday's announcement comes one day after Clinton’s speech to the American Legion, where she accused Trump of not believing in American "exceptionalism."

“My opponent in this race has said very clearly that he thinks American exceptionalism is insulting to the rest of the world,” she said in Cincinnati at the group’s national convention.

Trump speaks to the group's convention Thursday morning.