Commodore is a military rank used in many navies that is superior to a navy captain, but below a rear admiral. Non-English-speaking nations often use the rank of flotilla admiral or counter admiral as an equivalent, although the latter may also correspond to rear admiral. It is often regarded as a one-star rank with a NATO code of OF-6 (which is known in the U.S. as "rear admiral (lower half)"), but whether it is regarded as a flag rank varies between countries. It is sometimes abbreviated as Cdre, CDRE or COMO.