This 19th-century borrowing from French has a variety of pronunciations in English including (kd´r), (kä´dr), (kd´r), and (kä´dr). The first of these was popularized by the United States military, and (kä´dr) and (kä´dr) have sprung up probably through the association of cadre with padre. The pronunciation (kä´dr), which is the most common in British English, is closest to the French pronunciation. Any of these pronunciations is acceptable.