Clegg, now 26, was sentenced to life for the killing of a 19-year-old girl during an incident at an Army checkpoint in the province nearly five years ago.
Colonel Leonard Fitzroy-Smith has said that Parachute Regiment Association branches and at least one Royal British Legion branch had already come forward to support a boycott.
"They feel it would be two-faced to support the Government's VE-Day celebrations if Pte Clegg is still in prison," said Col Fitzroy-Smith.
"This is the spontaneous reaction of branches over just a few days since the House of Lords turned down his appeal," added Col Fitzroy-Smith, who is from Darlington and is helping to organise support.
A formidable team of former Para officers will unveil details tomorrow of what they claim are inconsistencies in the original court case and new forensic evidence.Reuse content