Legionnaire (Galaxy’s Edge serie)

The Galaxy is a Dumpster Fire.

A hot, stinking, dumpster fire. And most days I don’t know if the legionnaires are putting out the flames, or fanning them into an inferno.

A hostile force ambushes Victory Company during a diplomatic mission. Stranded behind enemy lines, a sergeant must lead a band of survivors against merciless insurgents on a deadly alien world. With no room for error, the Republic’s elite fighting force must struggle to survive under siege while waiting on a rescue that might never come.

There is also a short novel available here