Are you sure you didn't misread the middle character? ン instead of ソ turns it into ランク - Rank.
AH! I did. Thank you very much. That's what I did wrong. They're quite similar.
EDIT: OK well all Battle Skills (Or did I call them Weapon Skills? I dunno. It's late) are full translated. However they're not properly formatted with line breaks and such. So I'll have a patch up tomorrow. Sorry for the delay guys. Been busy and lazy. A lot of lazy.