England U21 assistant coach Ashley Cole says the attitude of the players was key to their Euros triumph.
The Chelsea legend was part of Lee Carsley's staff in Georgia and Romania.
He said: "I have been in and around it as an under-21s player and senior player, you always speak to the ex-senior players and we didn't always want to go and the club manager would pull you out.
"But I feel they truly, truly love coming here now. I think that is testament to what Lee has done here.
"He showed me is that it is not only about the tactics, but also the environment. This is international football. We get to see them maybe three times a year and you have got to make that time count.
"We have created a real family buzz and family environment and that is quite hard to do in international football, but we knew that to win that is what we'd need."
More must-reads: