Date: 1862
1. : the ranking officer of a staff in the armed forces serving as principal adviser to a commander
2. : the ranking officer of the army or air force and a member of the Joint Chiefs of Staff
Date: 1862
1. : the ranking officer of a staff in the armed forces serving as principal adviser to a commander
2. : the ranking officer of the army or air force and a member of the Joint Chiefs of Staff
Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003