As Army pain doctor Maj. Michael Stockin prepares to be arraigned Friday on charges that he sexually abused dozens of patients at Madigan Army Medical Center, near Tacoma, Washington, two of those former patients described to CBS News what they say was conduct that betrayed their trust. "Myself and Dr. Stockin were left alone in the room. He first checked my shoulders and then he asked me to stand up and to pull down my pants and lift up my gown," said one of the soldiers, who had consulted the Army physician for shoulder pain. "Dr. Stockin, he was face level with my groin, and he started touching my genitals." Both men, now retired after more than 20 years in the Army including three combat tours each, spoke exclusively to CBS News, describing alleged misconduct hidden under the guise of medical care. They described visits to a doctor who was supposed to treat their pain, but they say instead inflicted even worse. The Army has charged Stockin with 48 counts of abusive sexual contact and five counts of indecent viewing under the military code of justice. The Army has confirmed that all of the 42 alleged victims who were treated at the clinic at Joint Base Lewis-McChord are men. The case is being prosecuted by the Army's Office of Special Trial Counsel (OSTC). Ryan Guilds, a civilian attorney representing seven of Stockin's accusers ... says he believes there could be hundreds of victims, making the scope of this case "historic."