Second Lieutenant Geary led his men across exposed open ground swept by fierce enemy fire to join survivors of the Bedfordshire Regiment in a crater at the top of the hill.
The citation reads: For most conspicuous bravery and determination on "Hill 60," near Ypres, on April 20th and 21st, 1915, when he held the left crater with his platoon, some men of the Bedfordshire Regiment and a few reinforcements who came up during the evening and night.
The crater was first exposed to very heavy artillery fire which broke down the defences, and afterwards throughout the night to repeated bomb attacks which filled it with dead and wounded.
At one time he used a rifle with great effect, at another threw hand grenades, and exposed himself with entire disregard to danger in order to see by the light of flares where the enemy were coming on.
In January 1918 he rejoined the 1st Battalion East Surrey Regiment in Italy, still as acting captain, and commanded a company although medically he should not have returned to active duty.