Actually not really. All officers of countries that are recognized as countries by the United States are saluted even during times of war. I mean, you wouldnt stop and salute the captain of a platoon you are shooting at currently, thats just silly, but outside of combat situations, you are supposed to salute. Military bearing will be maintained. I dont know if its part of the ucmj or just tradition, im having a tough time tracking that down, but every bit of research i can turn up has that as the answer for "do you salute foreign officers"