Sure. There was a cadet who was very skilled in hand - to - hand combat. He practiced a lot during his NDA days. He participated in a combat training competition where he defeated opponents who were much more experienced on paper. His quick reflexes and well - practiced techniques made him a standout. This success in combat training led to him being selected to train other cadets in hand - to - hand combat techniques.
Well, Naruto's training with the ANBU in the fanfiction would likely enhance his combat skills in various ways. Firstly, ANBU are elite ninja, so they could teach Naruto more advanced ninjutsu techniques, like some rare and powerful jutsus. They might also train him in better stealth and assassination skills, which could be adapted for combat. This would make Naruto more unpredictable in battle as he could combine his regular showy attacks with these new, more covert skills.