Kalmah

I bought For the Revolution yesterday, just starting to listen to it.  I'm going to get their other stuff as well.  Very good Melodic Death.  

There is one song, this one called holy symphony of war.

It doesn't appear to be a cover song, from what I can tell.  But, most of the song reminds me of another song?  Especially the Chorus.  Maybe it is a cover?  Maybe I have heard it before, and just don't realize it?  Maybe it's just the tune, melody that is similar to another song? 

I have no clue.  Anyway, thoughts on Kalmah?  Insights as to WTF is going on in my head with this song? 

After not recognizing Heathen on the Thrash thread, it is quite possible I'm loosing my mind, which is strange, because I thought that had happened long ago. 

The song in question:

Kalmah is decent melodeath but I find them to be sort of second tier. Take that song, it's good but it makes me want to put on Dark Tranquillity.