Trouble Beyond the Borders
A force sword is a sword with blast energy (like a blaster) that is contained within a force field that only stops most of the energy of the sword from going out. The user can change the swords length. When a force sword is set to a longer length, it is weaker than at a shorter length. All things being equal, a shorter sword will be able to parry a longer sword.
However, the strength of the sword is also stronger towards the hilt. So combat between two skilled force sword wielders can be interesting as the blades’ lengths change to give one or the other combatants advantage.
By Imperial Law, only a noble may own or wield a force sword. Each sword is linked to the ID card of its owner. By Imperial custom, all nobles are required to carry a force sword.