JERUSALEM -- Felix Muller, 20, was born long after the Holocaust ended, but that doesn't diminish his sense of obligation to the victims.

"As a German, it's part of my history whether I want it or not," Muller said.

Last summer, he and two dozen other German volunteers arrived in Israel for a year of service through a group called Ot Hakapara, Hebrew for "Sign of Atonement," working at libraries, nursing homes and community centers around the country.

On Sunday night, they will join Israelis in observing the annual Holocaust remembrance day...