The Venus Matriarchy.

The troop transport judders violently as it hits Earths atmosphere. Inside your drop pod you glance at the faces of the other marines in your squad. Their fresh young faces, visible through the faceplates of their combat helmets mirror the fear and excitement of your own. A warning klaxon sounds alerting you to the fact that the drop pod will soon be jettisoned from the transport. You grip the cushioned steel bars that are folded down over your chest and brace for the shock of the impulse jets firing. The pod shakes as the jets fire and you feel your limbs grow heavy as the docking clamps release and your blasted clear of the transport.

You recall your briefing. Your company has the task of reinforcing an outpost that is facing a counterattack by the Mars Federation. The situation in that sector was described as 'fluid' which is military jargon for no one knows what the hell is happening.

You feel the retro rockets kick in as the drop pod nears the surface and the onboard AI maneuverer the pod to hit reasonably flat ground. There's a lurch as it hits earth and then a loud hiss as the restraining bars holding you to the seat disengage and swing up. You grab your rifle as the outer doors of the pod open outwards and you join in the scramble to exit the pod and find cover. You sprint forward blindly angling towards a rocky outcrop, only dimly aware of other marines racing on either side. You throw yourself down behind cover and breathe deeply and take stock of your surroundings