The broad pennant combination of the English Flag[2] at the hoist and the Dutch National Flag[3] in the fly originates from the Anglo-Dutch wars of the late 17th century, when it was used on Sundays to indicate that a service was in progress and a ceasefire existed between the warring nations.
United States Navy
U.S. Navy church pennant (top), and Jewish worship pennant (bottom).
The United States Navy maintains several church pennants, of which the appropriate one is flown immediately above the ensign wherever the ensign is displayed, at the gaff when under way, or at the flagstaff when not under way, when religious services are held aboard ship by a Navy chaplain. Originally, the only authorized church pennant was for Christian chaplains, regardless of specific denomination. Later in 1975, the Secretary of Navy approved a similar Jewish worship pennant.[4][5]
