text: United States Navy Prior to Executive Order 10812 of 24 April 1959, the United States Navy used the U.S. Naval Infantry Battalion Flag as its unofficial colours. While the Navy uses a number of maritime flags, such as the Ensign and Jack of the United States, the Flag of the United States Navy is normally seen only at ceremonies and parades. The display of streamers and fringe is consistent with that of the Marine Corps.
  United States Naval Construction Force
  When Naval Construction Battalions (Seabees) were first formed in 1942 the Naval Infantry Battalion Flag was mandated by Naval Regulation as the colours of the Naval Construction Force. Each battalion-sized unit or larger maintains a set of colours. The organizational colours of each unit is identical, excepting that each will have the unit's name and number in white on the flag. The display of streamers authorized to the unit is consistent with that of the Marine Corps.
  Other shore establishment units and commands of the Navy
  Organizational colours of the US Navy's other shore establishment commands and units and all command formations are in navy blue with the arms of the unit or command, with appropriate displayed streamers attached if authorized.
  South America