Owing to the shortage of WW1 aircraft in flyable condition, many of the aerial scenes were filmed using 1/6 scale radio-controlled models. One of the model aircraft operators was Derek Piggott, who was a stunt pilot in the film, 'The Blue Max'.
Though set in 1915, the British soldiers are shown wearing steel helmets, which weren't introduced until the following year. They should be wearing caps.
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Whether you're ready for the return of your favorite show or need to catch up, May is packed with an array of returning series.