Laura Gamble was born in Wakefield, Quebec on September 4, 1887 and graduated from the University of Toronto in 1910. In Toronto, Laura enlisted on May 4, 1915 with the No. 4 Canadian General Hospital, organized by the University of Toronto. She would also work with the No. 5 Canadian General Hospital. During the war, Laura served most of her time in the Mediterranean, aboard a medical ship, and in Malta and Salonica, Greece. She was awarded the Victory Medal in 1920 for her distinguished service during the war.

Included in the Laura Gamble fonds held by Library and Archives Canada is a diary, kept by Laura during her career as a nursing sister, in which she describes mostly the social side of life, such as tours in the countryside, parties, etc. There are some descriptions of the hospitals where she worked, although it is not the focus of her writing.