Yup. The Rohirrim see this Elf standing there bitching at this maybe-Gondorian, maybe the King of the West, maybe just another weird Ranger, and the two of them are obviously arguing in a foreign language like the Rohirrim don't matter (which is how Men see Elves - stuck-up and isolationist, ignorant of the plight of Men), and then the Ranger says something that cuts straight to their own philosophy.

Good point actually. It's been a while since I've watched these films and I remember this scene being emotional but I don't think I thought about it too hard beyond that. But you're right, he probably purposely says that in a language they'll understand, to be on their level and an honest leader.

I didn't see no wheels on that shield, it was clearly snowboarding.

They already knew they were going to die. Not dying that night was the twist ending.

Finnish people hear Finnish gibberish instead actually

Yeah I was honestly struggling to find the right word for this title lol. Soldiers definitely doesn't feel right.