John Still guided his Dagenham & Redbridge side to their second promotion in four years after they edged out Rotherham United 3-2 in a thrilling League Two play-off final at Wembley.
In only their third season in League Two following promotion from the Conference as title winners, the Daggers upset the formbook to beat Ronnie Moore's side.
Dagenham may have one of the smallest average attendances in the League but they produced a stirring display as they led twice before being pegged back until Jon Nurse's deflected 70th-minute effort ultimately proved decisive.
Veteran Millers goalkeeper Andy Warrington was superb throughout but he was beaten for the first time in the 38th minute by Paul Benson's ten-yard shot.
However, Rotherham equalised almost immediately as, straight from the restart, Kevin Ellison's left-wing cross was turned home by Ryan Taylor on the edge of the six-yard box.
Warrington was beaten for a second time 11 minutes after the break when the impressive Danny Green thrashed a right-footed strike across the keeper and into the back of the net.
Once again the South Yorkshire team's response was swift as, within five minutes they were level again. Once again it was Taylor who beat Tony Roberts with a 15-yard right-foot shot after being set up by Nicky Law's fine cross.
However, the Daggers had the final word when, with 20 minutes left, Nurse's shot was deflected past Warrington by the unfortunate Kevin Ellison.
Despite a few late scares, Still's side had done just about enough to deserve their elevation to the third tier of English football for the first time in their history.