True, the concept of Britain dates back to Roman times, but it was James I that founded Britain in the modern sense. With his accession to the throne in 1603 for the first time Scotland, England, Wales and Ireland were united - with James bestowing on himself the title of 'King of Great Britain'. Before this time, Scots and Irishmen may have served in the English Army as mercenaries, but it was known as an English Army - but now the King's (or British)...