After the Second Godswar the people of the desert vowed never to take sides in open warfare again. Not only did they suffer for their past mistakes, but doing so would also imbalance the scales and violate their oath to the Two-Fold Queen. As a result, The Waerd do not fight in wars. They will start wars. They will end wars. But they do shed blood on the battlefield. Theirs is a war from behind the curtains.
That all said, The Waerd are among the most tactical fighters in Elyria, and are renowned as effective assassins. While they typically strike first or use sabotage or subterfuge to avoid direct confrontation, they are never-the-less Skilled in melee combat using short-bladed or fist weapons, and are known to utilize thrown weapons such as fire flasks and smoke bombs - both constructed using alchemical minerals found in the caves and caverns of their semi-arid desert.
Finally, while effective in solo combat, The Waerd are lethal in groups, and very rarely move about alone. If you engage a solitary Waerd, the other one will be the last thing you didn't see.
Just sharing some info from the Waerd military segment (I am sure you read this, thus it is always a good place to go back to). They have bonus in disguises and I don't see why they wont get a bonus for being in group combat. Maybe everyone in stealth attacking at once will give a bonus to damage increase. Should be interesting to see the Waerd on the battlefield. I would not want to be the one facing them; especially in the shadows of war.