From The Ashes!
Captain America is the original World War II hero and despite being created by two young Jewish men and owned by a Jewish family never battled the infamous threat of the death camps directly, though he mowed down many a Nazi in his time. Taking on the "Holocaust" would have to wait until the Bronze Age of comics and issue #237 of the second Captain America series. The talents who bring Cap face to face with the final solution are writers Chris Claremont and Roger McKenzie and artists Sal Buscema and Don Perlin.
It happens that Cap had just put down the threat of the National Force led by a former Captain America the racist Cap from the 1950's. After the seeming death of Sharon Carter he's looking for a new direction (something Cap did a lot alas) and seeks to back away from his hero identity and find some solace as a private citizen named Steve Rogers. To that end he moves into a new apartment building, one owned by Anna Kapplebaum a survivor of the camps and in particular one which Cap himself had helped liberate. So we finally get to see the Living Legend battle the Nazis on the ground on which they murdered countless numbers.