"Why wouldn't you come here?" she replied.

The issue was debated in parliament in 2015, with then-Defence Minister Anna Soubry saying making changes to pension policy retrospective would break an "essential principle" and "would lead to widespread, long-term and unmanageable consequences for both this government and future governments".Mr Monaghan believes communication from the MOD was not good enough.

"Everyone was kept in the dark," he said."They knew nothing about [pensions] when they were young."We never had a brief on pensions. We were never given any insight and probably we didn't have any interest because I was a young man."

The Equalities for Veterans Association was disbanded a few years ago – because of a lack of success and the dwindling number of surviving veterans from that period.Mr Williams says he feels "very bitter" about his experience but hopes that by speaking out publicly for the first time, he can bring more attention to his case.

He also hopes any other servicemen still alive and affected by the same issue will come forward.

He added he intends to continue his campaign by contacting the current Stroud MP, Labour's Simon Opher, in the hope he will take up the case.The UK and US governments agreed a deal to reduce tariffs on some goods traded between the countries earlier this month.

It included the lowering and removal of import taxes on some of the UK's main exports to America, such as cars, steel and aluminium.That aspect of the deal is not impacted by the Court of International Trade's ruling, but the blanket 10% tariff on most other UK goods entering the US has now been called into question.

How that part of the deal could change remains uncertain, with the agreement between both governments yet to be implemented.The UK government has not commented on the court ruling but said it was working to ensure British businesses can benefit from the deal "as quickly as possible".