Book excerpt: This volume emerged from an international research colloquium jointly organised by National Museums Scotland and the Scottish Centre for Diaspora Studies, University of Edinburgh, funded by the Scottish Government and administered by the Royal Society of Edinburgh. Historians and museum curators from Australia, Canada, New Zealand and South Africa were invited to join with their Scottish counterparts to consider the functioning, and the meaning, of 'military Scottishness' in different Commonwealth countries and in Britain from the late Victorian period to the present day, with a particular focus on the impact of the First World War. Another key objective was to throw light on the 'hidden' culture of social networking which potentially operated behind local regiments and military units amongst Scotland's global diaspora. This edited collection provides a comparative overview of the nineteenth century emergence of military Scottishness and explores how the construction and performance of Scottish military identity has evolved in different Commonwealth countries over the late nineteenth and twentieth centuries. In particular, it looks at the ways in which Scottish volunteer regiments in Commonwealth countries variously sought to draw upon, align themselves with or, at certain key moments, redefine the assertions of martial identity which Highland regiments represented.