When I click on the text "et installent projecteurs et caméras", the translation you provide is "and install projectors and videocameras". There are several ways to translate "projecteur" into English: it can also mean floodlight, spotlight and searchlight, besides the obvious translation "projector".
They weren't entertaining Marshall Jodl by showing him movies. And even if they were, why would they need more than one projector? Given the context, a much more likely translation of "projecteurs" is "floodlights".
