 The King 's notably saw active service in the Second Boer War , the two world wars , and the Korean War . In the First World War , the regiment contributed dozens of battalions to the Western Front , Salonika , and the North West Frontier . More than 13 @,@ 000 men were killed . In the Second World War , the 5th and 8th ( Irish ) battalions landed during Operation Overlord , the 1st and 13th fought as Chindits in the Burma Campaign , and the 2nd Battalion served in Italy and Greece . The King 's later fought in the Korean War , earning the regiment 's last battle honour . 
