While searching through a large collection of the IWM's Great War posters on the Visual Arts Data Service site http://vads.ahds.ac.uk I came across this one. It appears to advertise a film about the tanks at Cambrai (or, most likely, their wrecks). If this footage still exists, it would make for some interesting viewing.
Yes, it's F.13 - with crew shown boarding - rumbling around and pushing down a big tree, and F.41 in Berlin - with a final war bonds advertisment. Plus some shots taken around Fontaine-Notre-Dame. The film is available at the Bundesarchiv. It was shown in German cinemas starting January 1918.
If the film consists only of those two tanks, then a lot of the footage can be seen in the Line of Fire DVD called Cambrai. Its an ok DVD, and shows F13 doing her thing, but sometimes they show Mark I tanks so I guess they couldnt tell them apart.
If you want to view a film at the Imperial War Museum, you have to book the session and give them more than 3 days notice. Their online viewing request form doesnt work, so I guess you'd have to call.
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Can you help me to find a contact in Bundesarchiv to obtain a copy of this film were F-41 appairs???
I am looking for all about Fray Bentos tanks (boths) to make a exposition of pictures en next October, to make a hommage from Fray Bentos city to all that fight in Cambrai ...
I think wuestehu means it was a typical act for the tanks, like a performing animal at the circus, rather than the tanks not being able to push trees down without help.