Reading Discworld!

[dehro]

The basic idea of Monstrous Regiment is quite common, yes. But practically all the details of Borogravian army are 100% 19th century British army.

With a few modifications for technology at least (nobody has rifles or muskets - the most sophisticated form of missile weapon is the hand crossbow).

Borogravia itself seems a little bit less "British" than its army does.

for some reason it made me think of the Prussian army, or indeed any army that you'd find on the field of battle at Waterloo..