Over the chapel's main door, there is a window dedicated to the Canadian Martyrs, a gift of the surviving Irish Canadian Rangers, erected at the time of the chapel construction, in memory of the officers and men of the regiment. It was constructed by Charles William Kelsey of Montreal. The large central panels and two of the smaller central panels of this window portray the eight martyrs. The upper left panel depicts the seal of the Jesuit Order, and the upper right panel is the Irish Rangers‘ regimental badge, while the two corner panels at the bottom are the Coat of Arms of the Loyola and Onaz branches of the family of Saint Ignatius, founder of the Jesuits, which were combined in various ways over the years to form the unofficial crest of Loyola College.
On Remembrance Day 1933, within a few months of the opening of the Chapel, the Colours of the Duchess of Connaught's Own Irish Canadian Rangers were laid up, and the window was blessed and dedicated. The Irish Canadian Rangers were a regiment formed in Montreal in 1914, whose roots came out of Loyola. Several hundred men died fighting in the First World War and when the regiment was disbanded in the 1920s, the Regimental Colours were given to Loyola. The flags hung in the Chapel until one was stolen in the late 1970s. It was never recovered.
