Oui monsieur
"Sir, yes, sir!"? ___ In the British Army they simply say: Sir!
it's "monsieur"
They say both yes sir and aye sir. Since they come from sailors, they say aye. Aye is not the same as yes; aye is an affirmative answer
You can say "Je vais bien, monsieur" in French to convey "I'm fine, sir."
In Portuguese, you can say "sim, senhor" to mean yes, sir.
Qui Monsieur
Bonjour Monsieur
au revoir monsieur
Mon plesire monsieure
monsieur et madame
Bonsoir, monsieur.
What is the gentleman's name/What is the gentleman called