Who was “Foo”?
In WW1 Foo was a mythical and mysterious little “man” who turned up nearly everywhere (especially where there was a bit of nonsense going on). He was shown (usually) as a little bald headed man peering over a stone wall, with the simple inscription “Foo was here”. He was chalked on the side of railway carriages, appeared in probably every camp that the 1st AIF served in and generally made his presence felt.