United States v. Sagona, sentenced at court-martial on 8 May 2008, appeal decided 30 September 2010.
The issue was IAC of trial defense counsel who allegedly failed to investigate and advise on a potential defense of immunity. R.C.M. 704 covers the issues of immunity, tempered by case law. Basically only the GCMCA can grant immunity, but . . . . Cooke v. Orser, 12 M.J. 335 (C.M.A, 1982), is one of the more well known cases about immunity outside the R.C.M. and UCMJ requirements.
The court in Sagona had ordered a Dubay hearing. See United States v. DuBay, 37 C.M.R. 411 (C.M.A. 1986) and United States v. Ginn, 47 M.J. 236 (C.M.A. 1986).