Thanks, Fiolar

The First World War from Above The story of the Great War told from a unique new aerial perspective. Featuring two remarkable historical finds, including a piece of archive footage filmed from an airship in summer 1919, capturing the trenches and battlefields in a way that's rarely been seen before. And aerial photographs taken by First World War pilots - developed for the first time in over ninety years - show not only the devastation inflicted during the fighting, but also quirks and human stories visible only from above. Presented by Fergal Keane.

I clicked on the link - Gardens gave the game away & it's not available in my area. fooey.

Director's blog about this program ... He found that a photograph taken over Diksmuide in Belgium shows how some German soldiers unwittingly gave away their position to the British - by gardening.

Although the men's barracks were safely camouflaged under trees, the flowerbeds were clearly visible from above to British photographic experts. And once British commanders saw the flowerbeds, they soon directed their big guns onto the barracks.