A Spitfire Flying Dray to Ferry Beer to France

This Spitfire was adapted to carry beer to France for the comfort of British troops serving in Normandy after D-Day:

Here's a close-up of the unusual jettison tanks:

The load was reportedly known as the Model XXX Depth Charge. Very witty.

Details of the aircraft and the reason for its modification can be read at Zythophile, here.