I've just gone on line at their website and had a look myself Thud.
For those who haven't seen it, the latest front cover is a take-off of that of a 1930's style boys' book for a "Biggles" story. i.e. a cartoon like drawing of, presumably, a "Camel" flying into the picture with an nondescript German Triplane going down in flames in the background.
Apparently within are included a couple of articles drawn from First World War subjects : for which this is dubbed the "Commemorative Issue".
The original editorial policy for "Aeroplane Monthly" front covers was for them to be a close up colour photograph of an historic type in flight.