US Navy Broad Command Pennant // 1
The broad command pennant is swallowtail pennant consisting of a white field with a Navy blue border on the upper and lower hoist edges with either Arabic or Roman numerals reflecting the number of the command, with Roman Numerals taking precedence over the Arabic.
The broad command pennant is flown in lieu of the commission pennant by commanders of squadrons of ships or aircraft wings who are not flag officers. It is shaped like the now-obsolete commodore's broad pennant--indeed, the unit commanders who use it are entitled to be addressed by courtesy as "commodore."
The broad command pennant is used in all respects the same as an admiral's flag. It is broken aboard the commodore's flagship at the same points of hoist as an admiral's flag, carried at the bow of a boat in which he is embarked, emblazoned on his social letterhead, displayed on a staff in his office, and, if he should die in command, halfmasted aboard his flagship and carried before his casket in the funeral ceremony.
LV Collection

From the Louise Veninga Collection.

ZFC Noteworthy FLAG