The Scots, massive omission, the Gallowgas have been mentioned in a previous comment and I would suggest all readers to check them up. A Gaelic Norse mix from the Hebridies and Ireland. Scotland has a very bloody history from just about the dawn of time to the present day.

One of the major exports was soldiers and bluntly mercinarys. The reason I feel the should be included is their massive impact in most european wars and furthur affield. The Baltics, central europe, middle east and later the americas and even the far east.

I know this list is about the medieval period which was the golden age of the Scottish warrior but they extend both much furthur back in time and forward to the present day, where the Scottish have a disproportionate representation in the Armed forces.

In the medieval period the Kingdom of man and the Isles covered areas from Ireland through the West of Scotland to Norway. The seat of power tended to move ranging from the most famous Findlaggen in Islay to Mann and also Norway.

Scary thought that at one time the Irish, Gaelic Scots and the Norwegians were under the one and the same command.

Apart from fighting on land they were fantasticaly skillful maritime fighters using originaly longships then birlins.

The odd thing is few people seem to know about them.

Another crew who should be considered are the Romanians, although this may be covered by the boyars.