"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.
It appears to be a large wheeled engine of some sort. I have no images to provide, but I know how they work. It had a steam engine, which would turn the large wheel on top, which would turn and power whatever would be hooked up. I don't know why it would be used in the First World War, but perhaps it could be hooked up to an tractor for extra power. I do not know the specific model. I may be wrong on all of this though.