England’s victory over the Netherlands in Dortmund has left Southgate and his players one game from history and ending the so-called "years of hurt" stretching back 58 years.
The campaign in Germany has been a slow-burner, but the torch was lit on a sultry, stormy night and England now have the opportunity to finish with glory against favourites Spain at the Olympiastadion.
England will contest their first final on foreign soil after the 1966 World Cup final and the Euro 2020 finals were played at Wembley.
They reached it in a manner that has been their trademark in Germany, coming from behind then surviving anxious moments before another late show, this time from Watkins, got them over the line.
It also gives England the chance to make up for the bitter disappointment of defeat by Italy on penalties at Wembley in the Euro 2020 final.
Southgate and England have become synonymous with near misses at major tournaments during his eight-year reign but have earned themselves an opportunity to write a new chapter in their history.
For Southgate, another final is vindication in the methods that have come under such scrutiny after England’s indifferent earlier performances. Success in Berlin would change the narrative around his tenure forever.
And it was the introduction of Watkins with nine minutes left that was decisive, the Aston Villa striker providing energy and pace to trouble the Dutch defence, his finish on the turn across Verbruggen the piece of quality required to win a tight game.
England have suffered disappointments in the past and will be underdogs against Spain, but there has been a belief about Southgate’s team – even when performances have been indifferent – and they will go to Berlin believing they can finally claim the silverware that has eluded them for more than half a century.