Joe Warren and Max Connolly got the crucial goals in either half as the Hawks' young guns claimed a 2-1 semi-final victory over Moneyfields under-18s at Westleigh Park on Thursday night.
Hawks were ahead inside five minutes with Warren on hand to bundle home from close range.
But Moneys were level before the break with Harry Close - brother of former Pompey and current Doncaster midfielder Ben - curling a superb free-kick effort into the net after 39 minutes.
But up stepped Connolly, heading home what would prove the winner 10 minutes after the restart, to ensure it was first-team player and Hawks’ youngsters head coach Joe Oastler's side who reached the county cup final.
Hawks will face either Camberley Town under-18s or Winchester Red u-18 in the final, who meet in the other semi-final on Thursday, March 10.