[2] Like his father and his brother, Faber was a member of the National Socialist Movement, or NSB, before the war,[3] and joined the Waffen SS a month after the German occupation of the Netherlands in 1940.

[2][5] His zeal increased after his father, Pieter Faber, a baker at Heemstede, was killed by Hannie Schaft of the Dutch resistance on 8 June 1944.

[2][4] He participated in the SS's Silbertanne ("Silver Fir") death squad which targeted members of the Dutch resistance, and those who hid Jews and opposed Nazism.

[2][8] After the war, Faber was tried by a Dutch court and sentenced to death by firing squad on 9 June 1947, for the murder of 11 persons in Westerbork and 11 others.

However, on 26 December 1952, he escaped from prison in Breda, with Herbertus Bikker, Sander Borgers [nl] and four other former members of the Dutch SS, and that same evening crossed the border into Germany.

[12] Following his escape Faber went on to live in the Bavarian city of Ingolstadt and until retirement worked for the car manufacturer Audi as an office clerk.

[14] In April 2009 Faber was listed by the Simon Wiesenthal Center as one of the most important Nazi era war criminals still at large.

[10] In January 2012 the German Justice department requested the judiciary in Ingolstadt, after pressure from the Dutch government, to execute the life sentence of the war criminal.