Engineers of the 354th Fighter Group fit a fuel drop tank to the wing of a P-51 Mustang. Image stamped on reverse: 'Barratt's Photo Press.' [stamp], 'Passed for publication 18 Jan 1944.' [stamp] and '300572.'[Censor no]. Printed caption on reverse: 'BATTLE OF BERLIN FIGHTER The Mustang P.51.B, newest aircraft to be used in the European Theatre of Operations is the longest ranged single engined fighter in the world- and one of the fastest. These aircraft took part in last week’s great air battle, escorting Forts and Liberators deep into Germany,. There is reason to believe that the new Mustang may have Berlin range. OPS: Fitting the auxiliary petrol tanks to the Mustang for another long flight into Germany. Barratt's 18/1/44.'