A Marine lieutenant colonel who was thrown in the brig for posting videos in which he criticizes the chairman of the Joint Chiefs of Staff and other senior military leaders for their roles in the Afghanistan withdrawal will plead guilty to multiple charges at his court-martial Thursday, his attorney said.

Lt. Col. Stu Scheller is charged with disrespecting superior commissioned officers, willfully disobeying an officer, conduct unbecoming an officer, contempt for his senior leaders and violations of good order and discipline.

On Aug. 26, Scheller posted a video on social media in which he criticized U.S. military leaders for the chaotic withdrawal from Afghanistan and demanded accountability for the 13 service members who were killed in a bombing by the Islamic State terrorist group, or ISIS. He made the video hours after the attack at Abbey Gate at the Kabul airport. Scheller served in Afghanistan and claimed to know someone who was killed in the attack.

In the video, Scheller said: “People are upset because their senior leaders let them down, and none of them are raising their hands and accepting accountability or saying we messed this up.

“I have been fighting for 17 years,” he said. “I am willing to throw it all away to say to my senior leaders I demand accountability.”