What's your favorite "All is lost but then here comes the cavalry to save the day" moment in cinema history?

I love when the Rohirrim show up to Minas Tirith in "The Return of the King" and all you hear at first is the horn blowing as Gandalf is facing off with The Lord of the Nazgûl.My other is in the final battle in "Avatar" when you think all is lost and Neytiri is about to go out firing arrows, and all of a sudden here comes all the wildlife charging through the jungle to wreck the invaders. via /r/movies https://ift.tt/2V634B5