On Thursday, world Champions France help kick off the inaugural UEFA Nations League against Germany, the start of a six days of action that also includes England v Spain and Portugal V Italy.
UEFA created the Nations League to replace friendlies with competitive matches, allowing nations to play equally ranked teams.
The four group winners of the top-ranked League A qualify for the UEFA Nations League finals in June 2019.
For the remaining sides, there is promotion and relegation to play for, not to mention a potential route to UEFA EURO 2020.
UEFA Nations League- Opening fixtures