Possible Clues:

• It's worth more than one buck to Brother Sergeant
• It might get busted
• It takes more than one buck to get your little brother on the company
• Your little brother, not an officer, is worth more than one buck (6)
• Lively horse officer's given to brother
• Horse battalion initially right to take on small company
• Horse at a 16 Across
• Wild horse of W. US
• It may provide big bucks!
• One might give you a few bucks