Ashley Harris has joined the Hawks on a month-long loan.
The Pompey attacker has found first-team opportunities difficult to come by at Fratton Park this term.
And in a bid to continue his development, he has followed the likes of Adam Webster and Jack Maloney (both at Aldershot) into non-league to gain experience.
The Hawks are currently 13th in Skrill South – but saw forwards Christian Nanetti and Dennis Oli limp off injured in their 2-1 win over Farnborough last night.
Harris, 19, has scored three goals in 31 appearances for Pompey.
Meanwhile, the Hawks have launched an exclusive offer to the Fratton faithful.
Entry to Westleigh Park this season is £5 for Pompey season-ticket holders.
Fans just need to show their ticket on entry, while accompanying children will be charged just £1.