The Orc Lord has been uniting the belligerent orc tribes under his banner, through a combination of reawakened race memory, charisma, and conquest. He’s been drilling the orcs, training them, turning them into a unified force.
Now General Gul, leader of the Red Flag Army, has got tired of waiting and has
marched her portions of the orc horde towards dwarven lands.
The Dwarf King has called upon the Elf Queen to honour a treaty and come to the aid of the dwarves. The Elf Queen has no choice but to answer the summons.