The Uderdwellers have burst into All Quiet on the Martian Front, brought to the surface by the devastation wrought. While they bear no love for humanity, they do see the Earth as theirs and are here to help repel the Martian Forces! Organizing into mobs of troops, with mixed weapons, the Underdwellers will not rest until the planet is free from the alien menace. Then they will decide what must be done with the human upstarts that have dominated the surface. The Underdweller Mob pack comes with 25 infantry with bases.