Soldiers from the 36 Engineer Regiment are in Liverpool are helping to build a new fence around the Rhys Jones Centre today.
Fencing going all around the building was on the original plans for the centre, but a lack of funding means it was never completed.
The centre was opened last September in memory of Rhys Jones, who was killed by a stray bullet, aged 11, in a shooting in 2007.
His death became symbolic of north Liverpool's gang warfare problem. The community centre named after him helps local youngsters escape poverty and crime.