srfc
Ancient Mariner
There's a certain feel in common, but had the lyrics been different, you wouldn't write this. Those songs are not that close.
I'm laughing at the "paint by numbers" comment. One has a verse chorus verse chorus structure, and the other has no chorus and most of the verses coming consecutively in an extended section.
Yeah they start and end with a clean tone section, but so do millions of other songs.
Really, the only similarity is one is about Celts and the other is about Medieval Scotland, a gap of over a thousand years of history

Trooper and Aces High are far more similar to each other, both about the British in a war, with the same build up intro into a guitar harmony riff