The 19th Battalion was formed in New Zealand in 1939 under the command of Lieutenant Colonel J. S. Varnham. After a period of training it embarked for the Middle East and then onto Greece in 1941 as part of the 2nd New Zealand Division. It participated in the Battles of Greece and later in Crete. Evacuated from Crete, it then fought in the North African Campaign and suffered heavy losses during Operation "Crusader". Brought back up to strength, the battalion participated in the breakout of the 2nd New Zealand Division from Minqar Qaim in June 1942, where it had been encircled by the 21st Panzer Division. The following month, the battalion suffered heavy casualties during the First Battle of El Alamein.