Troops that give no quarter have no right to kill enemies already disabled on the ground, or prisoners captured by other troops.
62
All troops of the enemy known or discovered to give no quarter in general, or to any portion of the army, receive none.
63
Troops who fight in the uniform of their enemies, without any plain, striking, and uniform mark of distinction of their own, can expect no quarter.
64
If American troops capture a train containing uniforms of the enemy, and the commander considers it advisable to distribute them for use among his men, some striking mark or sign must be adopted to distinguish the American soldier from the enemy.
65
The use of the enemy's national standard, flag, or other emblem of nationality, for the purpose of deceiving the enemy in battle, is an act of perfidy by which they lose all claim to the protection of the laws of war.
66