Possible Clues:

• He played with J Lennon spending hour with troops
• Troops in a fortress
• Military base arranged with soldiers round about
• Military post where troops are stationed
• Reported Gary and junior at fortified place
• No Sir, the bit of stuff up there is for the Army
• Camp, so raring to revamp
• No title given to magazine that's turned camp
• Outpost group
• Is it for the army, that fish? No, Sir, it's up to there