Related Clues:

• To a degree it's on to make the defence strong
• The matter of uncertainty about the defence
• In the matter of the defence there's uncertainty
• That's enough to make one pale though safe
• It's inclined to need skill to make a bit of mutton so tough
• 'There's a strong prohibition around the tenth street, perhaps (7)'
• The defence is a bit sheepish
• I stab on this for fortification
• Fort sort
• See 26
• Fighting en masse? You need protection
• Catcher where there's a rift that's crescent-shaped
• Soldiers lack faith in defence
• Defence takes skill with racket
• The pen of the Judge Advocate General