'For conspicuous good work and devotion to duty since the arrival of the Battalion in France last April. 2nd Lieutenant Arden is Battalion Lewis Gun officer. He has trained and supervised both the Battalion and Company Lewis Gunners. He had charge of all the Lewis Guns in the trenches at Armentieres and throughout done excellent work, particularly on the march and under adverse road conditions. He has always been absolutely reliable, energetic and cool in the handling of the guns under fire and has shown administrative qualities above the average.'
Awarded, and promulgated, 'London Gazette', 4 January 1917.