International football in Europe is changing and the inaugural UEFA Nations League, which gets under way this September, marks the beginning of a whole new era.
A total of 55 teams from across the continent will take part in the venture, which seeks inject fresh impetus into the international game by making meaningless friendlies a thing of the past.
The structure of the competition may seem complicated - see our explainer here - but it will all become very familiar this autumn.
With first games set to get started in just over a month's time, Goal takes a look at the teams awaiting England, Scotland, Wales and Northern Ireland.