Belgians' forgotten mass flight Following the fall of Antwerp in October 1914, Belgian civilians and soldiers flee en-masse to the Netherlands. Their numbers swelled to over 1 million. The soldiers are placed in internment camps, and one of the largest camps, with capacity for 15,000 soldiers, is located near Harderwijk. Many soldiers successfully escaped from these camps, making their way to England and eventually back to the front lines in the Flemish Westhoek region.