'Operations opposite Polderhoek 27th November to 1st December 1917. For conspicuous gallantry and devotion to duty. During the above period this NCO was in command of the Battalion Carrying Party bringing rations up to the troops in the Front line. The enemy shelled the track at dusk and dawn with high explosive, shrapnel, and also with machine guns, but Sergt Brien personally led his party through the barrage, where a less resolute leader would not have succeeded. He never once failed to bring up hot rations to the men in the trenches, and in these duties showed marked powers of command, initiative and readiness to assume responsibility. He showed the greatest devotion to duty, an utter disregard for danger, and his services were of the greatest value to his Battalion.'
Source: London Gazette
Date: 13/3/1918

'Operations opposite Polderhoek 27th November to 1st December 1917. For conspicuous gallantry and devotion to duty. During the above period this NCO was in command of the Battalion Carrying Party bringing rations up to the troops in the Front line. The enemy shelled the track at dusk and dawn with high explosive, shrapnel, and also with machine guns, but Sergt Brien personally led his party through the barrage, where a less resolute leader would not have succeeded. He never once failed to bring up hot rations to the men in the trenches, and in these duties showed marked powers of command, initiative and readiness to assume responsibility. He showed the greatest devotion to duty, an utter disregard for danger, and his services were of the greatest value to his Battalion.'
Source: London Gazette
Date: 130 March 1918