Source Material for Japan in DS/SGII (wasRe: Unofficial Civilization)

For a look at one possible for so the Japanese Empire and it's colonial
ground
forces I recommend A Small Colonial War and Fire In A Faraway Place by
Robert
Frezza.  These mainly deal with colonial light infantry and light
armored cav
but should fit quite well into a DSII or SGII setting. 

SGT Chris Ruhl
A Company, 9th PSYOP Bn (Abn)
Sine Pari