This page in Mitchener's diary from World War II includes a drawing of a stage, on which he has written, "Hereon have appeared backdrops - Remarkable in that they were constructed with very few materials...much ingenuity." Under productions, he...
These two pages each have a heading - "Same Monotony Until" and "Exodus Once More" but nothing has been drawn. It appears that Mitchener did not have the time to draw what he wanted under each title heading.