The Swadian man-at-arms is the mounted class of the Kingdom of Swadia in Multiplayer games. Perhaps the most feared and iconic class in Mount & Blade, men-at-arms have access to the great lance -- the longest weapon in the game, except for the pike. In addition to good skill with lances, they actually have the highest one-handed weapon proficiency in the game. They have no throwing skill, but their accuracy with thrown weapons doesn't seem too negatively affected by this -- although their rate of throwing isn't good.
The great lance is an interesting tradeoff. Its cost is only slightly higher than a heavy lance, and for a skilled player, it can give a mounted man-at-arms extreme range and power in a charge. However, it is awkward to wield. If a man-at-arms dismounts, he will find a great lance very difficult to use to ward off cavalry charges, while regular or heavy lance is still to some degree usable as an infantry spear.