“In these prosecutions the Sicherheitsdienst was supported by the German police service, which was connected with the labor offices and was composed of members of the NSB and the like.
“At the end of April 1942 the deportation of workers started on a grand scale. Consequently, in the months of May and June, the number of deportees amounted to not less than 22,000 and 24,000 respectively, of which many were metal workers.
“After that the action slackened somewhat, but in October 1942 another peak was reached (2,600). After the big concerns, the smaller ones had, in their turn, to give up their personnel. . . .
“This changed in November 1944. The Germans then started a ruthless campaign for manpower, passing by the labor offices. Without warning they lined off whole quarters of the towns, seized people in the streets or in the houses and deported them.
“In Rotterdam and Schiedam where these raids took place on 10 and 11 November, the number of people thus deported was estimated at 50,000 and 5,000, respectively.