"Any person who ... aids, or attempts to aid, the enemy with ... money. Any person who ... without proper authority, knowingly harbors or protects or gives intelligence to or communicates or corresponds with or holds any intercourse with the enemy, either directly or indirectly; shall suffer death or such other punishment as a court-martial or military commission may direct." Punitive Articles of the UCMJ: Article 104—Aiding the enemy
"Scope of Article 104. This article denounces offenses by all persons whether or not otherwise subject to military law. Offenders may be tried by court-martial or by military commission."