A grant of immunity overcomes the privilege against self-incrimination by removing the consequences of a criminal penalty. If a servicemember is given immunity, the government can compel him to make a statement, but cannot use that compelled statement against him in trial. The statement can, however, be used if the servicemember commits perjury, false statement, or false swearing. Only the General Court-Martial Convening Authority (GCMCA) can grant immunity. There are circumstances in which immunity may be implied (
immunity), even though the GCMCA did not grant immunity.