War stays always the same

Even though the hundred year war has been over for a long time and most peoples live in peace, there are still groups and marauding gangs who reject the peace treaty. For pirates it is a lucrative business to invade merchant and mining ships in less well guarded sectors. Only rarely there are survivors, and when they do, they are sold as slaves. Due to the peace treaty, the military can only secure a few sectors, so large companies rely on their own militias. Mercenaries are often hired to carry out special missions. A rewarding business for experienced pilots.