after the outbreak of the first world war, production and staff increased quickly, reaching a height of 8500 people in 1917. arms production increased by the large orders for the dutch army. after the end of the war, the country entered a period of disarmament with the establishment of the league of nations. the number of employees fell to less than 2000 in 1921 and closure of the company was considered. as an alternative, automobiles were assembled and converted. the company also employed 200 drivers delivered mail, until this function was transferred to the "mailies" of the dutch national postal service in 1930.