"For conspicuous gallantry and devotion to duty. He displayed the greatest gallantry and initiative in organising and leading bombing attacks. Although subjected to heavy machine gun and rifle fire he captured an important enemy post. His fine example and disregard of danger were of great value to his men."
De Gaury was a fluent Arabic speaker and spent much time hunting with Ibn Sa'ud during his wartime assignment to the Nejd and Asir. In his day he was a foremost authority on the region and wrote a number of books on the region in later life.
An enthusiastic and skilled photographer, de Gaury is responsible for a large proportion of the photographs of the Arabian Peninsula from this period. He was also an accomplished watercolorist and sketch artist, frequently drawing or painting scenes from memory only hours after they had occurred.