Check the Carrierâs website to find a productâs serial number. The website lists all products on one page or by category. Find the item and click through to see the serial...
Ensign(noun) a flag; a banner; a standard; esp., the national flag, or a banner indicating nationality, carried by a ship or a body of soldiers; -- as distinguished from flags indicating divisions of the army, rank of naval officers, or private signals, and the like.
The rank flag or distinguishing flag is the flag flown by a superior officer on his flagship or headquarters (hence the term flagship). The origins of this are from the era before radiotelegraphy and radiotelephony, when orders were given by flag signals.