Five years ago this month I wrote an article in The Spectator denouncing the National Army Museum after its £24 million Heritage Lottery Funded refurbishment. The concept of decolonisation was then in its infancy, and I criticised the museum’s relentless attempts to make visitors ashamed of the British Army’s supposed legacy of imperialism and slavery, when that constituted only a tiny part of its overall glorious story (and it was in the forefront of fighting against the latter).