Related Clues:

• New sergeant is set at odds
• Alienate sergeant in mess
• Field behind East Street is cut off
• Alienate with row at outset
• A pork pie with neat rum separate
• Separate and set off for the mountains
• Measure beer and turn resentful
• Bent gent's ear to cause dissension
• Steer and nag unexpectedly break off friendship
• ... gets near awkward part
• Make hostile sergeant different
• Sergeant ambushed and cut off
• Cut off with wrongly set compass
• Doctor set compass to find distance
• France's eastern mountains form a barrier