I'm afraid we've got another bit of piracy here, Paul. That looks very much like PDA's compilation, which has been on Youtube for a couple of years. The clip is from a French film of an A7V after capture - I forget which one, but someone will tell us.
Stop Press: It's A7V 542.
-- Edited by James H on Wednesday 9th of June 2010 10:47:11 AM
__________________
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.