2nd Battalion, Grenadier Guards.

Awarded the Distinguished Conduct Medal in the London Gazette of 5 August 1918.

Greenwood was a native of Bacup, Lancashire.

The citation for the Distinguished Conduct Medal published in the London Gazette reads, "For conspicuous gallantry during an attack. When communication by runners was impossible, and it was of vital importance to get a message back to the position of the battalion, he stood up under intense machine gun fire and delivered fifteen exposures of the Popham panel to a contact aeroplane, thus enabling the battalion commander to receive information as to the position on the flanks and the strength of the enemy. He showed splendid courage and initiative, and by his action ensured the success of the operation".