In the second last level (where you first fight the Azteks), there is a mine that has a monster in it and there are two ways to complete the task. (that I know of)
1. Send a platoon to the entrance of the cave and they will go in and kill the monster.
2. If you look around near the cave, you will find a herder that is herding cows. The cows have a gas around them because they are sick. Pick up one of the cows and drop it by the entrance to the cave. The monster will eat it and in turn will die.
These are both evil ways to complete the task.
Added by: Smoothe Mar 17th 2006, ID#8122