The Gordon Highlanders began as the 92nd (Gordon Highlanders) Regiment of Foot in 1794 - raised, like many Highland regiments, from the recruiting estates of a great Scottish family during the Napoleonic Wars. In 1881, in one of the great army reorganisations of the Victorian period, the 92nd merged with the 75th (Stirlingshire) Regiment of Foot to form the regiment that would be called simply the Gordon Highlanders for the next 113 years. Across that century-plus the regiment fought in Egypt, in South Africa, in the Khyber Pass, on the Western Front of the First World War, in North Africa and Italy and the Far East of the Second, and across the post-war commitments of the British Army from Korea to Northern Ireland. In 1994 it was amalgamated into the Highlanders, and then later into the Royal Regiment of Scotland. The drums still beat, but no longer for the Gordons alone.

The building that now houses the museum has its own military history. The War Office acquired it in 1960 to serve as the regimental headquarters of the Gordon Highlanders - a working administrative base for serving soldiers and the families of those who had served. When the regiment was disbanded in 1994, the building was transferred to the trustees of the regiment. They extended it, transformed it from offices into galleries, and reopened it in 1997 as a museum. The transformation was not from one civilian use to another. It was from a place where serving Gordons did paperwork into a place where the story of every Gordon - serving, retired, killed in action - could be told. That continuity matters. The museum is not curated by outsiders. It is curated by people who knew the people.

The main exhibition space is the Grant Room. Beyond it the Armoury displays edged weapons and firearms, generations of the tools by which Gordon Highlanders did the work of soldiering. A mock-up of the Regimental Officers' Mess recreates the social architecture of the regiment - the silver, the portraits, the long table, the rituals by which the unit reminded itself who it was. A separate Silver Room holds the regimental silverware proper. Works by Sir George Reid, the celebrated Aberdeen-born portrait painter, are on loan from Aberdeen Art Gallery and displayed throughout. Personal artefacts, medals, letters, photographs and uniforms tell the story not of a regiment in the abstract but of specific men - their service, their losses, their families left behind in Buchan or Deeside or the streets of Aberdeen itself.

The museum is independent, self-financed, and run by a charitable trust. In 2016 it nearly closed. The cause was the great downturn in the North Sea oil and gas sector, on which much of Aberdeen's corporate philanthropy depends. When the oil price collapses, so do the donations from the firms that ride that price, and so does the support for institutions that operate on thin margins. By 2019 the museum had recovered, sustained by fundraising, by the dedicated work of its trustees and staff, and crucially by at least 170 volunteers who keep the doors open, the gardens tended, the tearoom running and the visitors greeted. It is exactly the kind of small institution that British heritage repeatedly rests on - underfunded, locally rooted, kept alive by people who refuse to let the story go.

Walk through the galleries and what you encounter is not triumphalism. The Gordon Highlanders were a fighting regiment - they won Victoria Crosses, captured French guns, broke German lines, and held positions across two world wars - and the museum tells those parts honestly. But it also tells the harder parts: the men who did not come back, the families who waited, the wounded who carried the war home for the rest of their lives. The Grant Room and the Armoury between them try to do something difficult: honour the service without sanitising the cost. The regiment was named for one of the great noble houses of Aberdeenshire, but its rank and file came from farms and fishing villages and granite tenements across the north-east. The museum belongs to them too. That, more than any cabinet of silver, is what 170 volunteers keep alive.