Why Is Ahsoka Called Sir?

Even as a young Padawan, Ahsoka has proven herself in battle many times over, often saving the lives of clones and, at times, even saving her own master. By calling her “sir” the clones are letting Ahsoka know that they accept her being in command, and respect her word as a leader.

Is Ahsoka male or female?

Ahsoka Tano, a Togruta female, was the Padawan learner to Anakin Skywalker and a hero of the Clone Wars. Alongside Anakin, she grew from headstrong student into a mature leader. But her destiny laid along a different path than the Jedi.

Why does Rex call Ahsoka?

There has to be some explanation for this line. Why after all this time did Rex call her "ma'am" instead of "sir"? Ahsoka is no longer part of the Jedi Order; and therefore isn't officially a member of the Republic Military. She's just Lady Tano now, hence Rex saying ma'am.