Originally posted by Zenwolfmmm, I didn't know it. Since the war was almost over , I've always thought that most jedi had already retreated from the battlefields and came back to the temple. Well, if most jedi in temple were padawans and unexperienced knights (basically temple guards were the only valuable fighters inside the temple then) their defeat makes much more sense.
It's even noted most able bodied Jedi Knights were away from the Temple.Plus it was the entire 501st Legion, which a Clone Legion is 9k+ troops.
So with most Jedi away from the Temple, plus surprise, plus an entire legion with a Sith lord backing, it really can't be used against them.