So, for my third swordsman, I've tried to push my limits a little bit further and looked for something more "imperial"... finally found in the 3rd Edition Warhammer Fantasy Armies book.
I have based the shield with VGC Bonewhite (on a white basecoat) and drafted the half eagle and the half checkered with The Army Painter Soft Tone ink.
Once done, I have redrawn the eagle with VMC Black Red 859 and filled it with VMC Cavalry Brown 982.
For the checkered part, I've used an intermediary black from the Andrea range, deepened with VMC Dark Sea Blue 898, and highlighted by adding Bonewhite to the base. For the white squares, I've used Soft Tone ink mixed with VMC Extra opaque Heavy Brown 153 for shadowing, and VMC Ivory 918 for highlighting. Et voilà!
The shield bearer (MM60 fighter F24):