One thing remains true for the unaligned forces in the War of the Five Kings, whether they’re fighting for coin, self-interest, or simple survival, they always remain true to themselves. They are a wild card that can be added to any army in the game. Some Heroes, like Roose Bolton and Ramsay Snow, are most at home on the battlefield alongside their men. Others, such as Petyr Baelish and Lord Varys, like to manipulate the situation behind-the-scenes.
The Stormcrow mercenary company is well known throughout all of Westeros for their love of money. When hiring them to fight their battles, the different Houses know how to get the best out of them… simply offer them more coin. The Dervishes are one of the most prized items on the mercenary’s “menu,” being their most veteran skirmishers, ready to fight hard… for a price.
During times of peace, most folks have nothing but disdain for Hedge Knights. These landless nobles tend to own not much more than their armor, weapons, and horse. However, in times of war, a man with those in hand are a vital resource, since having trained and equipped cavalrymen can turn the tide of battle. With the war over the Iron Throne raging, the Hedge Knights have taken to the field for anyone willing to pay their price.
In Westeros, it's not just the men that will put their lives on the line out on the battlefield. Especially for the Free Folk, everyone is expected to do their part, and that's why the Spearwives units are created. But far from just feeble extras, the Spearwives have trained extensively with their weapons of choice and can be just as deadly as any other soldier. Their short spears are light enough to even be thrown at the enemy, letting the Spearwives cut them down at range. But the real danger comes when they charge. Their sharp spears, with the momentum of a running start, can pierce even the toughest armor.
House Bolton gets the award for most-armored unit on the field of battle. The Flayed Men cavalry are clad in heavy plate armor and their horses are equally armored in thick barding. Only the toughest and largest horses can withstand the great weight put upon them by all that steel. While they might not be the fastest cavalry unit, they are certainly the hardiest. And their own war flails make enemy defenses seem pointless as the spiked balls wrap around limbs or curve over shields.