A HellPit is a spring of green ectoplasmic goo that spring forth from the bowels of the astreal to the materail realm in out of the way places. These points of concentrated Evil and Chaos create dangers untold in regions around them.
A Woodsman Blade is a useful tool for those who ply the woods. It is often the primary weapon for a variety of Woodsman Organization.
The Dark Oak Forest is a place of darkness, danger, and Evil. For reasons best not talked about, the Dark One has visited this place, twisting it forever.
This is the order of the Three Kingdoms, each kingdom volunteering men to serve in the Order. Each of the members must be an expert woodsman: able to survive in the Great Dark Oak Forest that borders all three Kingdoms.
Silk Armor? The Mongols wore silk undergarments under layers of leather armor. Why? Because silk is very strong. If an arrow hit them and made it through their armor, it would usually not have enough energy to puncture the silk. It could still enter their body but, because the silk would not break, the arrow's barbs could not do their work and the arrow could easily be removed leaving a relatively clean wound considering normal arrow wounds.