Big·horn River 
(bĭghôrn′)
(bĭghôrn′) A river rising in west-central Wyoming and flowing about 740 km (460 mi) north to join the Yellowstone River in southern Montana northeast of Billings. On the east side of the river are the Bighorn Mountains, a section of the Rocky Mountains climbing to 4,013 m (13,167 ft) at Cloud Peak.
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- counterinsurgency
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