
Never heard about 'Tropicalized' Defiant, but...
 Prototype N1550 with Vokes (?) filter in flight
 [strijdbewijs.nl]
Looks like it's unarmed too.
taken from fb

'Tropicalised' Defiant


Wellington Mark X HE239 of No.428 Sqn. RCAF, after its rear turret was blasted off by German flak, April, 1943

Damage to Vickers Wellington Mark X, HE239 'NA-Y', of No. 428 Squadron RCAF based at Dalton, Yorkshire, resulting from a direct hit from anti-aircraft gun fire while approaching to bomb Duisburg, Germany on the night of 8/9 April 1943. 
 Despite the loss of the rear turret and its gunner, Sgt. Lorenzo Bertrand (RAF 1050195) as well as other extensive damage, the pilot, Sergeant L F Williamson, continued to bomb the target, following which it was found that the bomb doors could not be closed because of a complete loss of hydraulic power. Williamson nevertheless brought HE239 and the remainder of his crew back for a safe landing at West Malling, Kent, where this photograph was taken.


Pilot: Sgt L.F. Williamson R-107665
 Navigator: F/Sgt W. Watkins R-92787
 Bomb Aimer: F/Sgt H. Parker R-100022
 Wireless Operator: Sgt J. Powley 1203562
 Rear gunner: Sgt L. Bertrand 1050195

Sgt. Bertrand's body was found near Holtwick/Haltern am See (Germany) and he was buried at a cemetery near Sythen (Ehrenfriedhof) on 9 April 1943 and later exhumed to Reichswald Forest War Cemetery.

(Colourised by Mark at Canadian Colour)
https://www.facebook.com/canadiancolour?fref=ts


Flakdamage

British soldiers take time out in the lull of the fighting to clean their "Vickers" machine gun near the Italian town of Anzio.