In A Heartbreaking Work of Staggering Genius, Dave Eggers writes:

When my father was in intensive care, about a day and a half from throwing in the towel, a priest was sent, presumably to administer last rites. After meeting him and ascertaining the purpose of the visit, my father quickly dismissed him [and] sent him out. The doctor related the story later.… "They say there are no atheists in the trenches," the doctor said, looking at the floor, "but …whew!" He wouldn't even let the man do some sort of cursory prayer, Hail Mary, anything.…But see, my father had as much patience for religion as he did for solicitors ringing the bell.