Hello!
I just watches lotr: rok for the ####th time and haven't noticed this until now but at the black gate before the final battle Gandalf does this trademarketed jedi mind trick movement with one of his hands which causes Aragorn to change mood and attack them head on. He even squints in a weird way - focusing on him.
Here is a gif of what I mean: https://i.gyazo.com/b03a82c6effcb2a5...f724b1674e.mp4
Did he somehow influence Aragorn's mind?