Further to my target towing comment above, I have been looking at the area of the photo behind the local labourer wearing a turban.
There appears to be a piece of equipment jutting horizontally out of the area where the Lewis gun would normally be. There also seems to be a fan-like object mounted on that.
Or, am I seeing things?
Could it be one of these?
http://spitfirespares.co.uk/Website%...ng%20Winch.jpg