Yoda is a Jedi but at no point in ESB or ROTJ do we get any evidence that he was ever a Jedi Knight.
He constantly pushed Luke to avoid violence, avoid weapons, avoid confrontations until he is ready. And only then in the context of confronting and defeating his own personal fears not Vader or even the Emperor.
Ben on the other hand flat out tells Luke he has to kill his father in order to save the galaxy. During his first face to face meeting he gives Luke a weapon and tells him a lie setting him on a course that will lead him to confront Vader. He lets himself be killed infront of Luke possibly hours after this. He is a militant character.
Yoda is more of a guru, a teacher a source of knowledge.
Luke ultimately rejects Ben’s demand to kill and accepts Yoda’s lesson of facing fear, this rescues Anakin. The true ‘other’ the real ‘new hope’ the only person Palpatine would allow to get close enough to throw him down a really stupidly placed hole in the floor.
I realise this is my interpretation of the characters which is totally flipped by the prequels as they currently exist but it just seems odd to me that a philosophy such as the Force would only have a military arm. There are Buddhist and Taoist, even Christian warrior monks but they are a tiny sub faction of philosophies devoted to different things.