Yes, an Article 120 conviction can be overturned because the accused received ineffective assistance of counsel, but doing so is difficult and depends on meeting a demanding legal test. Article 120 of the Uniform Code of Military Justice covers rape, sexual assault, and related sexual offenses, and convictions under it carry severe consequences. When a service member believes that defense counsel’s mistakes caused an unjust conviction, the law provides a path to challenge it on appeal, though success requires more than showing that the lawyer could have done better.
The constitutional right at stake
The right to effective assistance of counsel flows from the Sixth Amendment and applies in courts-martial. A service member tried under Article 120 is entitled not merely to a lawyer but to a lawyer whose representation meets a minimum standard of competence. When that standard is not met and the failure affects the outcome, the conviction may be set aside.
The governing framework comes from the Supreme Court’s decision in Strickland v. Washington, decided in 1984. Military appellate courts apply the Strickland test to ineffective assistance claims arising from courts-martial, including those involving Article 120 offenses. So the analysis a service member faces is the same two-part test used throughout American criminal law.
The two-part Strickland test
Under Strickland, the appellant must establish two things. First, deficient performance: that counsel’s representation fell below an objective standard of reasonableness. This is not satisfied by second-guessing tactical choices that fell within the wide range of reasonable professional judgment. Courts presume that counsel acted competently, and the appellant must overcome that presumption with concrete evidence of error.
Second, prejudice: that the deficient performance prejudiced the defense. The appellant must show a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different. A reasonable probability is one sufficient to undermine confidence in the outcome. Both prongs must be met. A serious mistake that did not affect the verdict will not justify reversal, and a damaging outcome traceable to strong evidence rather than to counsel’s errors will not either.
Why Article 120 cases can present strong claims
Sexual offense prosecutions under Article 120 often turn on credibility and on a limited universe of evidence. When a conviction rests heavily on the testimony of a single witness, the choices defense counsel makes about investigation, cross-examination, expert assistance, and the handling of forensic or digital evidence …