Practice Relating to Rule 62. Improper Use of Flags or Military Emblems, Insignia or Uniforms of the Adversary
Ecuador’s Naval Manual (1989) provides:
At sea. Naval surface and subsurface forces may fly enemy colours and display enemy markings to deceive the enemy. Warships must, however, display their true colours prior to an actual armed engagement.
In the air. The use in combat of enemy markings by belligerent military aircraft is forbidden.
On land. The law of land warfare does not prohibit the use by belligerent land forces of enemy flags, insignia, or uniforms to deceive the enemy either before or following an armed engagement. Combatants risk severe punishment, however, if they are captured while displaying enemy colours or insignia or wearing enemy uniforms in combat.
Similarly, combatants caught behind enemy lines wearing the uniform of their adversaries are not enentitled to prisoner-of-war status or protection and, historically, have been subjected to severe punishment. It is permissible, however, for downed aircrews and escaping prisoners of war to use enemy uniforms to evade capture, so long as they do not attack enemy forces, collect military intelligence, or engage in similar military operations while so attired. As a general rule, enemy markings should be removed from captured enemy equipment before it is used in combat.