[1] The citation for his MC, awarded in January 1918, reads:[3] For conspicuous gallantry and devotion to duty when with the leading troops of an advanced guard.

Owing to his initiative and resource an enemy ammunition column was destroyed, a headquarters raided, and several officers, fifty men and two machine guns were captured.The bar to his MC, awarded in June, reads:[4] For conspicuous gallantry and devotion to duty.

On the troops on his right flank withdrawing, he immediately organised a counter-attack, leading it himself, by which the lost ground was regained.

He succeeded in (maintaining his position, displaying the greatest initiative and gallantry throughout a most trying period.After the war, he became a brigade major in India in 1927[1] and attended the Staff College, Quetta, from 1932 to 1933, alongside future generals John Grover and Edmund Hakewill-Smith.

[1] In August 1941 as part of Paiforce (formerly Iraqforce), Brigadier Aizlewood commanded Hazelforce and the 2nd Indian Armoured Brigade Group[1] during the Anglo-Soviet invasion of Persia.