I see no one has mentioned the very pygmies who are sitting on the front of the Carden-Loyd Tankette. Who and what was there regiment and what role did they perform within the Battery?.
They are obliviously members of the R.H.R.R.; Royal Halfling Reserve Regiment
They are RHA... Royal Halfling Artillery.
Joking apart, they had their legs removed and a neural net implanted in the spine so as to operate the tankette by instinct alone, like a 40K dreadnought, but Old Skool