Marines

Theyre not sailors, theyre not soldiers, what the hell are they?.

Marines are just soldiers who are part of the navy who originally established for onboard guard duties but also for raiding enemy ships and raiding coastal shores. They are known to be very egoistic and full of themselves and they think they are better than the army (who are predominant in the trade of soldiering) for some reason, but really they are not. They are no better than real soldiers, just a bit different the fact they are under a different branch of the armed forces, however this is the only reason which makes them stand out.