He was 22 years old, and a lance-sergeant in the 2nd Battalion, Irish Guards, British Army during the First World War when the following deed took place for which he was awarded the Venture capital. On 12/13 September 1917 north of Broenbeek, Belgium, Lance-Sergeant Moyney was in command of 15 men forming two advanced posts. Surrounded by the enemy he held his post for 96 hours, having no water and very little food. On the fifth day, on the enemy advancing to dislodge him, he attacked them with bombs, while also using his Lewis gun with great effect.
He died in Roscrea, County Tipperary on 10 November 1980.