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.