Two major events were to prove a watershed in Gabriel’s life, namely his father’s tragic death and World War 2.
On 6th September 1939 the Union of South Africa united with the Allies in declaring war on Germany. Gabriel volunteered for active service but was refused leave of absence by the Cape Times because of his expertise in the photo-lithography department. With his father he served in the Civil Defence Corps until 1942 when all Dutch citizens domiciled in South Africa were called up for service by the Dutch government.
After a year of failing health his father, Tinus, was found to be suffering from terminal lung cancer. Gabriel was granted compassionate leave to attend his father’s deathbed, thereby miraculously escaping death himself. The troopship transporting the Seventh Contingent, from which he was recalled, was torpedoed en route to Britain with a loss of all lives. During his vigil at his father’s bedside Gabriel pondered on the lamentable extinction of his father’s talent and vast store of knowledge. In a fitting tribute to his father he vowed to make optimal use of the foundation blocks which he had so generously provided, on which to build his artistic career.
On 17th July Tinus passed away. Immediately thereafter Gabriel was instructed to join the Eighth Contingent of the Koninklijke Nederlandsche Brigade, Prinses Irene and departed on the “Sabajak” on 20th November, arriving in Britain on 16th December 1942. Amidst preparations for the Allied Second Front he spent his free time sketching and painting watercolours of the English countryside, attending the Slade School of Art, which had been transferred to Windermere for the duration of the war, as a part-time student. On 5th August 1944 he departed for Arromanches, Normandy, with Fighting Unit 111, 49th Division attached to the 21st Army Group as part of the follow-up forces to expand the beachhead.
They advanced to the River Orne to take over from the 6th Airborne Division which had landed on D-Day, 6th June, and then continued on to Belgium. On 4th September they were transferred to the 1st Army Group as an army of occupation. They were directed to Holland as follow-up forces for Operation Market Garden. From 17th September till 7th October they held the bridge at Graves which, on 17th September had been gained by the US 82nd Airborne Division.
In the midst of the action, Gabriel still found time to sketch and paint many historical scenes of the Second Front. While standing guard at Wispic on 4th November he was injured by anti-personnel shells and hospitalised. Thereafter his active participation in the war was over. The Medical Commission graded him Medically unfit for duty and he was instructed to return home. He departed for Glasgow on the “Strathaird” on 22nd May 1945 and arrived in South Africa on 12th June.
He had suffered post traumatic stress, which was not readily understood in those days, and was never the same again. For his service Gabriel was awarded the Atlantic Star 1939-1945; Defence Medal 1939-1945; 1939-1945 Star; Army of Occupation Medal, Victory Medal, and the Oorlogsherinneringskruis met Gespen, Krijg te Land 1940-1945 and Normandie 1944.The Netherlands Military Mission granted him 30 days leave commencing 13 June after which he returned to work at the Cape Times.
Unsettled by the experiences of the past three years, Gabriel found difficulty in adjusting to the humdrum routine of civilian life and left to pursue art full time. During Tinus’ lifetime, Gabriel had only painted in water colours, perhaps an unconscious attempt to retain his identity while working in the shadow of his famous father. Now, for the first time, he directed his efforts at painting in oils.
At an exhibition at Maskew Miller’s Art Gallery, Cape Town which was opened by the Netherlands Consul General, Dr A L Wurfbain on 16 November 1945, he received encouraging favourable notices.