OK, so here are the 89 signatories to that op-ed in the Washington Post:
Leon E. Panetta, former defense secretary
Chuck Hagel, former defense secretary
Ashton B. Carter, former defense secretary
William S. Cohen, former defense secretary
Sasha Baker, former deputy chief of staff to the defense secretary
Donna Barbisch, retired major general in the U.S. Army
Jeremy Bash, chief of staff to the defense secretary
Jeffrey P. Bialos, former deputy under secretary of defense for industrial affairs
Susanna V. Blume, former deputy chief of staff to the deputy defense secretary
Ian Brzezinski, former deputy assistant defense secretary for Europe and NATO
Gabe Camarillo, former assistant secretary of the Air Force
Kurt M. Campbell, former deputy assistant defense secretary for Asia and the Pacific
Michael Carpenter, former deputy assistant defense secretary for Russia, Ukraine and Eurasia
Rebecca Bill Chavez, former deputy assistant defense secretary for Western hemisphere affairs
Derek Chollet, former assistant defense secretary for international security affairs
Dan Christman, retired lieutenant general in the U.S. Army and former assistant to the chairman of the Joint Chiefs of Staff
James Clapper, former under secretary of defense for intelligence and director of national intelligence
Eliot A. Cohen, former member of planning staff for the defense department and former member of the Defense Policy Board
Erin Conaton, former under secretary of defense for personnel and readiness
John Conger, former principal deputy under secretary of defense
Peter S. Cooke, retired major general of the U.S. Army Reserve
Richard Danzig, former secretary of the U.S. Navy
Janine Davidson, former under secretary of the U.S. Navy
Robert L. Deitz, former general counsel at the National Security Agency
Abraham M. Denmark, former deputy assistant defense secretary for East Asia
Michael B. Donley, former secretary of the U.S. Air Force
John W. Douglass, retired brigadier general in the U.S. Air Force and former assistant secretary of the U.S. Navy
Raymond F. DuBois, former acting under secretary of the U.S. Army
Eric Edelman, former under secretary of defense for policy
Eric Fanning, former secretary of the U.S. Army
Evelyn N. Farkas, former deputy assistant defense secretary for Russia, Ukraine and Eurasia
Michèle A. Flournoy, former under secretary of defense for policy
Nelson M. Ford, former under secretary of the U.S. Army
Alice Friend, former principal director for African affairs in the office of the under defense secretary for policy
John A. Gans Jr., former speechwriter for the defense secretary
Sherri Goodman, former deputy under secretary of defense for environmental security
André Gudger, former deputy assistant defense secretary for manufacturing and industrial base policy
Robert Hale, former under secretary of defense and Defense Department comptroller
Michael V. Hayden, retired general in the U.S. Air Force and former director of the National Security Agency and CIA
Mark Hertling, retired lieutenant general in the U.S. Army and former commanding general of U.S. Army Europe
Kathleen H. Hicks, former principal deputy under secretary of defense for policy
Deborah Lee James, former secretary of the U.S. Air Force
John P. Jumper, retired general of the U.S. Air Force and former chief of staff of the Air Force
Colin H. Kahl, former deputy assistant defense secretary for Middle East policy
Mara E. Karlin, former deputy assistant defense secretary for strategy and force development
Frank Kendall, former under secretary of defense for acquisition, technology and logistics
Susan Koch, former deputy assistant defense secretary for threat-reduction policy
Ken Krieg, former under secretary of defense for acquisition, technology and logistics
J. William Leonard, former deputy assistant defense secretary for security and information operations
Steven J. Lepper, retired major general of the U.S. Air Force
George Little, former Pentagon press secretary
William J. Lynn III, former deputy defense secretary
Ray Mabus, former secretary of the U.S. Navy and former governor of Mississippi
Kelly Magsamen, former principal deputy assistant defense secretary for Asian and Pacific security affairs
Carlos E. Martinez, retired brigadier general of the U.S. Air Force Reserve
Michael McCord, former under secretary of defense and Defense Department comptroller
Chris Mellon, former deputy assistant defense secretary for intelligence
James N. Miller, former under secretary of defense for policy
Edward T. Morehouse Jr., former principal deputy assistant defense secretary and former acting assistant defense secretary for operational energy plans and programs
Jamie Morin, former director of cost assessment and program evaluation at the Defense Department and former acting under secretary of the U.S. Air Force
Jennifer M. O’Connor, former general counsel of the Defense Department
Sean O’Keefe, former secretary of the U.S. Navy
Dave Oliver, former principal deputy under secretary of defense for acquisition, technology and logistics
Robert B. Pirie, former under secretary of the U.S. Navy
John Plumb, former acting deputy assistant defense secretary for space policy
Eric Rosenbach, former assistant defense secretary for homeland defense and global security
Deborah Rosenblum, former acting deputy assistant defense secretary for counternarcotics
Todd Rosenblum, acting assistant defense secretary for homeland defense and Americas’ security affairs
Tommy Ross, former deputy assistant defense secretary for security cooperation
Henry J. Schweiter, former deputy assistant defense secretary
David B. Shear, former assistant defense secretary for Asian and Pacific security affairs
Amy E. Searight, former deputy assistant defense secretary for South and Southeast Asia
Vikram J. Singh, former deputy assistant defense secretary for South and Southeast Asia
Julianne Smith, former deputy national security adviser to the vice president and former principal director for Europe and NATO policy
Paula Thornhill, retired brigadier general of the Air Force and former principal director for Near Eastern and South Asian affairs
Jim Townsend, former deputy assistant defense secretary for Europe and NATO policy
Sandy Vershbow, former assistant defense secretary for international security affairs
Michael Vickers, former under secretary of defense for intelligence
Celeste Wallander, former deputy assistant defense secretary for Russia, Ukraine and Eurasia
Andrew Weber, former assistant defense secretary for nuclear, chemical and biological defense programs
William F. Wechsler, former deputy assistant defense secretary for special operations and combating terrorism
Doug Wilson, former assistant defense secretary for public affairs
Anne A. Witkowsky, former deputy assistant defense secretary for stability and humanitarian affairs
Douglas Wise, former deputy director of the Defense Intelligence Agency
Daniel P. Woodward, retired brigadier general of the U.S. Air Force
Margaret H. Woodward, retired major general of the U.S. Air Force
Carl Woog, former deputy assistant to the defense secretary for communications
Robert O. Work, former deputy defense secretary
Dov S. Zakheim, former under secretary of defense and Defense Department comptroller
https://www.washingtonpost.com/opinions ... al-rights/
So, among these there are four defense secretaries and twelve generals.
Then you have some more listed in an article on CNN:
Marine Corps Gen. James Mattis, Former Secretary of Defense under Trump
"Donald Trump is the first president in my lifetime who does not try to unite the American people -- does not even pretend to try. Instead he tries to divide us. We are witnessing the consequences of three years of this deliberate effort. We are witnessing the consequences of three years without mature leadership. We can unite without him, drawing on the strengths inherent in our civil society."
Marine Corps. Gen. John Kelly, Former Chief of Staff to Trump, Former commander of US Southern Command under Obama
"I would've argued against it, recommended against it," Kelly said of Trump's photo-op. "I would argue that the end result of that was predictable."
"I think we need to look harder at who we elect. I think we should look at people that are running for office and put them through the filter: What is their character like? What are their ethics?"
Marine Corps Gen. John Allen, Former commander of US forces in Afghanistan
"Donald Trump isn't religious, has no need of religion, and doesn't care about the devout, except insofar as they serve his political needs...To even the casual observer, Monday was awful for the United States and its democracy. The president's speech was calculated to project his abject and arbitrary power, but he failed to project any of the higher emotions or leadership desperately needed in every quarter of this nation during this dire moment."
Navy Adm. Mike Mullen, Former chairman of the Joint Chiefs of Staff
"It sickened me yesterday to see security personnel—including members of the National Guard—forcibly and violently clear a path through Lafayette Square to accommodate the president's visit outside St. John's Church. I have to date been reticent to speak out on issues surrounding President Trump's leadership, but we are at an inflection point, and the events of the past few weeks have made it impossible to remain silent. Whatever Trump's goal in conducting his visit, he laid bare his disdain for the rights of peaceful protest in this country, gave succor to the leaders of other countries who take comfort in our domestic strife, and risked further politicizing the men and women of our armed forces. There was little good in the stunt."
Air Force Gen. Richard Myers, Former chairman of the Joint Chiefs of Staff
"The first thing was just absolute sadness that people aren't allowed to protest and that, as I understand it, that was a peaceful protest that was disturbed by force, and that's not right. That should not happen in America. And so I was sad. I mean, we should all shed tears over that, that particular act. ...I'm glad I don't have to advise this President. I'm sure the senior military leadership is finding it really difficult these days to provide good, sound military advice."
Army Gen. Martin Dempsey, Former chairman of the Joint Chiefs of Staff
"The idea that the President would take charge of the situation using the military was troubling to me."
William Perry, Former Defense Secretary
"I am outraged at the deplorable behavior of our President and Defense Secretary Esper, threatening to use American military forces to suppress peaceful demonstrators exercising their constitutional rights. This is a deeply shameful moment for our nation."
Navy Adm. William McRaven, Former commander of US Special Operations Command
"You're not going to use, whether it's the military, or the National Guard, or law enforcement, to clear peaceful American citizens for the President of the United States to do a photo op. There is nothing morally right about that."
Navy Adm. James Stavridis, Former Supreme Allied Commander of NATO
"Our active duty military must remain above the fray of domestic politics, and the best way to do that is to keep that force focused on its rightful mission outside the United States. Our senior active duty military leaders must make that case forcefully and directly to national leadership, speaking truth to power in uncomfortable ways. They must do this at the risk of their career. I hope they will do so, and not allow the military to be dragged into the maelstrom that is ahead of us, and which will likely only accelerate between now and November. If they do not stand and deliver on this vital core value, I fear for the soul of our military and all of the attendant consequences."
Army Gen. Raymond A. "Tony" Thomas, Former commander of US Special Operations Command
On Esper's use of the term "battlespace" when discussing quelling violence on the streets amid civil unrest: "The 'battle space' of America??? Not what America needs to hear...ever, unless we are invaded by an adversary or experience a constitutional failure...ie a Civil War..."
https://edition.cnn.com/2020/06/05/poli ... index.html
So, that's another nine generals and another defense secretary.
Then there's Colin Powell, former general and secretary of state.
So, at least 22 generals and 5 defense secretaries and counting.....
