On the 23rd May 1944, 2 Canadian Infantry Brigade, supported by the North Irish Horse, Royal Armoured Corps, attacked the Adolph Hitler Line between Acquino and Pontecorvo. Lance-Sergeant Irvine was detailed to a mine sweeping party moving forward with the leading battalion, the Princess Patricia's Canadian Light Infantry. At 0740 hours the tanks of the North Irish Horse encountered mines in the area [Map Reference 74719, 6] and were unable to advance.
The Engineer Non-Commissioned Officer moved forward with the mine sweeping party led by Lieutenant Carr-Harris and in spite of intense fire assisted in the organization and conduct of the detail. While proceeding with his task, Lance-Sergeant Irvine was wounded in several places by shrapnel. In spite of these wounds this Non-Commissioned Officer continued to direct the party for several minutes until unable to proceed any further. His determination and devotion to duty inspired the entire party and was no doubt a major contribution to the final accomplishment of the task.
Note: See also citation for Sapper Lyndon Harrison