Lieutenant by Rick Shelley (Dirigent Mercenary Corps 2)

Lieutenant Lon Nolan is staging a coup to take over the government in Singaraja, New Bali’s capital. It’s only an exercise for the local Militia.

They return back to base only to find that they are bound back out. This time in regiment strength. Their mission is to Defend Calypso from Belletiene’s invasion and liberate them if they have been occupied. They arrive in the middle of the invasion and succed in fighting it off only to face a second Belletiene invasion.

I am not really happy with these books. I hope they will get better but I don’t expect them to. There is almost no science fiction in this. It is more or less infantery tactics from the Great War (ww1) with a vener of technology.