RCW 38.38.736
[Art. 104] Aiding the enemy.
Any person subject to this code who:
(1) Aids, or attempts to aid, the enemy with arms, ammunition, supplies, money, or other things; or
(2) 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 be punished as a court martial may direct.
[ 1963 c 220 § 103.]