In April 1942 Currie became commander of 9th Armoured Brigade. In November 1942, on orders from Bernard Freyberg, General Officer Commanding2nd New Zealand Division, he led the spearhead for the allied breakout from the town of El Alamein in what was to become the Second Battle of El Alamein. Currie had tried to get the brigade out of doing this job stating that he believed the brigade would be attacking on too wide a front with no reserves and that they will most likely take 50 percent losses. The reply came from Freyberg that Montgomery The 9th Armoured Brigade started its approach march at 8 pm on 1 November 1942 from El Alamein railway station with around 130 tanks; it arrived at its start line with only 94 tanks. The brigade was to have started its attack towards Tel el Aqqaqir at 5.45a.m. behind a barrage; however, the attack was postponed for 30 minutes while the brigade regrouped on Currie's orders. At 6.15 am, half an hour before dawn, the three regiments of the brigade advanced towards the gunline. The German and Italian anti-tank guns opened fire upon the charging tanks silhouetted by the rising sun using mostly Pak38 and Italian 47mm guns, along with 24 of the formidable 88mm flak guns. The brigade had started the attack with 94 tanks and was reduced to only 24 runners and of the 400 tank crew involved in the attack 230 were killed, wounded or captured. After the Brigade's action, Brigadier Gentry of 6th New Zealand Brigade went ahead to survey the scene. On seeing Currie asleep on a stretcher, he approached him saying, "Sorry to wake you John, but I'd like to know where your tanks are?" Currie waved his hand at a group of tanks around him, replying "There they are". Gentry was puzzled. "I don't mean your headquarters tanks, I mean your armoured regiments. Where are they?" Currie waved his arm and again replied, "There are my armoured regiments, Bill". The brigade had sacrificed itself upon the gun line and caused great damage but had failed to create the gap for the 1st Armoured Division to pass through; however, the attack as expected brought down the weight of the German and Italian tank reserve. At 11a.m. on 2 November the remains of 15th Panzer, 21st Panzer and Littorio Armoured Divisions counterattacked 1st Armoured Division and the remains of 9th Armoured Brigade, which by that time had dug in with a screen of anti-tank guns and artillery together with intensive air support. The counter-attack failed under a blanket of shells and bombs, resulting in a loss of some 100 tanks.
Currie became commander of 4th Armoured Brigade in February 1943. He led his brigade in the Normandy landings on 7 June 1944 but was killed when German shellfire hit his position on 26 June 1944.
Family
On 9 December 1926 he married Marianne Charlotte Blackburn.