When the Netherlands were invaded on 10 May 1940, no operational unit had yet been equipped with the type. The crews had not finished their training yet and the vehicles themselves had not all been completed due to delays in the fitting of the armament and repairs necessary because the welded armour plates proved prone to cracking. Therefore only three DAF M39s actually participated in the fighting, in ad hoc-units, engaging German airborne troops and landed transport planes. After the Dutch defeat, German combat units would for several years employ the captured vehicles under the designation "Panzerspähwagen DAF 201 (h)", some of them upgraded by DAF, until gradually losing them all on the Eastern Front.