When his company was pinned down by two enemy gun emplacements, Cecil attempted to use mortar fire to eliminate the close-range fire that was inflicting heavy casualties and making it impossible for his unit to retreat from the terrain ploughed up by artillery fire. Unable to locate the camouflaged enemy position in the moonlight, he continued to direct the fire until a German shell severely wounded his leg and knocked him unconscious.
When he regained consciousness, he took a two-man bazooka team and waded through icy water up to his chest to an enemy machine gun. Using the cover of the bazooka team, he approached the enemy position alone. He ran the last 15 metres and killed the two riflemen with a hand grenade. Then, under heavy fire, Bolton led his men across open ground to the second German machine gun. An enemy sniper trying to cut them off was taken out and the trio continued. Spotted by the machine gun crew and exposed to direct fire, he killed one of the three gunners with carbine fire (a shortened, lighter version of a rifle) and his two comrades shot the other two.
Despite his wounds, he led the bazooka team to an 88mm gun, which was subsequently knocked out. On the way back to his own lines he was wounded again. Rather than expose his men to any more deadly fire, he refused help and ordered them to pull themselves to safety, crawling in great pain until he reached his own lines, where he collapsed.