The church pennant, a signal that a religious service is about to take place or is underway aboard a ship, is used in the British Royal Navy. It dates from the 17th Century and combines the flags of England, St. George's Cross, and Holland. A similar pennant is used by the U.S. Navy when churches are in progress.

Adapted from:
Crampton, William G. Flag. New York: Alfred A. Knopf, Inc. 1989. 64 pp.