This is the brief history of the 9th (Scottish) Division, a new division formed from Kitchener's volunteers at the beginning of the war. The podcast follows its movements and engagements along the Western Front from its deployment to Flanders in May 1915 through to the Armistice, on 11 November 1918.
I recommend using the Long Long Trail website by Chris Baker, if you need to find out which division your chosen unit or soldier served with.