Clan trials are a bit technical. But let’s walk through it. First an overview of the trial process.
1. The aggressor announces himself and the objective of the attack (territory, genetics, tech info, etc.). This begins the Batchal.
2. The commander responsible for defending the resource in question states what forces he will use to defend, and where the battlefield will be. They might even discuss victory conditions such as Focht and Ulric did for Tukayyid.
3. The direct subordinates of the attacking commander will bid for the attack. The commander might join the bidding as well, depending on circumstances.
4. The battle takes place. The winner takes/keeps possession of the resource in question. Prisoners taken become bondsmen.
Now it should be noted that the purpose of the trial system is to minimize collateral damage and damage to the prize. For instance, it wouldn’t be good if the only way to get new genetic material is to make a commando raid on a genetic storage facility. There would be a high probability of damaging this valuable resource in the fighting, including the destruction of the targeted materiel. The trial system allows the fight to happen in a way that the prize is unharmed and any other genetic material that wasn’t targeted is left intact as well.
So here’s what you could do. You could have the target character declared as the sole defending force, unaugmented, or with a sword or other weapon of choice. The bidding assures that the attacker will use a similar force – they won’t bring a mech to take out a single man. But, you can complicate the issue by having someone else fight for the target. This allows real, lethal combat to take with no risk to the individual (i.e., the prize).
If you go with the former, bear in mind that a clan warrior is disposable so may choose to fight to the death – which spoils the outcome. If he loses and surrenders, he’s technically a bondsman. This is why I prefer the target to sit-out the fight and have a champion do it. If he loses, the targeted individual is not a bondsman but the immediate property of the victor (new clan, unit, whatever).