Great Britain is not a country, it is part of the United Kingdom.

There are only three. They are Scotland, Wales and England. They are on the island known as Great Britain. You are confusing the Great Britain with the United Kingdom. The United Kingdom includes the three countries in Great Britain, and also Northern Ireland which is on the island of Ireland.

It is an island, part of the sovereign state of the United Kingdom of Great Britain and Northern Ireland.

Great Britain has at some point in history, clashed with troops from many countries.

Great Britain has at some point in history, clashed with troops from many countries.

Great Britain is a landmass and the largest island of the British Isles. Great Britain houses the countries of Scotland, Wales and England and also forms part of the sovereign state (and country in it's own right) known as the United Kingdom of Great Britain and Northern Ireland (or U.K. for short).