"military unit." Encyclopædia Britannica. 2010. Encyclopædia Britannica Online. 16 Oct. 2010 <http://www.britannica.com/EBchecked/topic/1346160/military-unit>: "Administratively, several ships of the same type (e.g., destroyers) are organized into a squadron. Several squadrons in turn form a flotilla, several of which in turn form a fleet. For operations, however, many navies organize their vessels into task units (3–5 ships), task or battle groups (4–10 ships), task forces (2–5 task groups), and fleets (several task forces)." نسخة محفوظة 2022-11-15 على موقع واي باك مشين.
"military unit." Encyclopædia Britannica. 2010. Encyclopædia Britannica Online. 16 Oct. 2010 <http://www.britannica.com/EBchecked/topic/1346160/military-unit>: "Administratively, several ships of the same type (e.g., destroyers) are organized into a squadron. Several squadrons in turn form a flotilla, several of which in turn form a fleet. For operations, however, many navies organize their vessels into task units (3–5 ships), task or battle groups (4–10 ships), task forces (2–5 task groups), and fleets (several task forces)." نسخة محفوظة 2022-11-15 على موقع واي باك مشين.