September 1939, the invasion of Poland by the German army marked the beginning of the Second World War. In October 1940, Sorel Industries Ltd enter into production in record time.

Founded by Joseph Simard, Sorel Industries will be put into operation in February 1941. It will be the only production center of artillery equipment in North America, where we proceeded to the manufacture of weapons from their raw material.

In July 1941, the first 25 pounds (11 kg) cannons are delivered to the Government of Canada. In 1942, Sorel Industries obtained a contract for manufacturing shells of eight inches (20 cm) and naval guns of four-inch (10 cm), which has necessitated the expansion of the plant.

At the height of production in 1943, Sorel Industries Ltd account 3 000 employees.

In 1942, for the 300th anniversary of the city of Sorel, Sorel Forge already appears as a leader in a publication relating the feat of the region. Half a century later, what was formally know as Sorel Industries is still today forging ahead of its times.

" In the early days of 1940, began installing equipment; beyond 1100 machines, over 7000 tools, ovens, presses giant bridges, ferries, etc. But the most modern buildings and best tools are not enough. In the new arsenal, it needed skilled hands, minds trained to acheived the excessively complicated task that we would undertake. "

- Sept. 20, 1942 Fondation of Sorel City 300th anniversary album