Ex-Dukes and members of the public gathered on the cobbles of Crossley Street to mark the start of Armed Forces Week.
Calderdale Council raised the Armed Forces Day flag above the Town Hall as part of the celebration attended by the Mayor of Calderdale.
The ceremony – which featured speeches, prayers for those currently serving in the forces, and even a cornet rendition of the National Anthem – came before Halifax’s official Armed Forces Day parade in the town.
Representatives from the RAF, Duke of Wellington’s Regiment and British Legion Ovenden and District formed part of the crowds.
Speaking at the flag-raising ceremony, the Mayor of Calderdale coun Ann Martin, said: “By being here today we’ve already embraced this very moment for those of you to show your support and gratitude.
“Since the first Armed Forces Day in 2009 the council has been pleased to show its support by flying this flag.
“Let us not forget that the Armed Forces and their families make huge sacrifices for us and we should value what they do just not today but every day.”
Veteran Duke David Woolley said: “I think it’s important we keep remembering this particular day and as things are going we still need to keep the forces memory alive.
He added that he’d been impressed with input from younger generations.
He said: “I think the biggest thing is a lot of them have friends, brothers and sisters serving in the forces. I think that brings it home how important it is to remember things like this.”