I have no particular image in mind.
(I wish i'd chosen pikemen when looking for an image right now.)

After searching long and hard i found at least one image, i wanted a formation of them but noooo, ain't gonna happen.
So here's a single trooper, uniform colours might not be spot on but i don't care anymore.
http://pre10.deviantart.net/7b94/th/pre/i/2015/143/9/9/halberdier_by_lordgood-d8uhfgm.png