6. C.J.S. Treason § 8.]
“Aid and comfort may be given in various ways, such as buying a vessel and fitting it for service in aid of the enemy, delivering prisoners and deserters to the enemy, or selling critical materials with knowledge of the fact that the purchaser buys them to use in the manufacture of gunpowder for the enemy, or otherwise to aid him in his prosecution of the war. And the courts have given short shrift to the claim that such a sale was not intended to aid the enemy but only to make a profit.” Rollin M. Perkins & Ronald N. Boyce, Criminal Law 502 (3d ed. 1982).