Private Peter Keill was born on 20 May 1898 in Govan, Glasgow. He was one of 10 children born to Robert Keill and his wife Mary. Peter enlisted into The Argyll and Sutherland Highlanders. He later transferred to 5th Battalion The Seaforth Higlanders before transferring to 7th Battalion.

By October 1918 the static fighting associated with the Western Front, which had kept the British Army in Belgium within the Ypres Salient since 1914, had lifted, and Allied forces were advancing. On 1 October 1918, 7th Battalion The Seaforth Highlanders were in assembly positions in front of the village of Slypskapelle. After a brief barrage, they attacked at 6.15am and reached their first objective, the Menin to Roulers railway line north of Ledeghem.

After further fighting they consolidated in positions along the railway line. The battalion had suffered casualties of 23 killed in action or died of wounds, four missing and 73 wounded. Pte Peter Keill was among these casualties. The location of Pte Keill’s grave was lost and as he was missing, he was commemorated on the Tyne Cot Memorial.

Later research revealed the location of Peter's grave at Dadizeele New British Cemetery and his final resting place has been marked with a new CWGC inscribed headstone to be cared for in perpetuity.