Although automails are generally used as an advanced medical tool to make life easier for amputees, in the country of Amestris (which has seen a significant increase in automail usage over the past two decades of constant, successive wars), automail has become a site also for weapons development, resulting in "combat automail". Using various techniques, these machines, previously used only for movement, began to incorporate weaponry such as diamond-tipped claws, hidden blades and even firearms, sometimes voluntarily at the expense of the normal functionality of the limbs. As such, there has also been an increase in the number of fanatical automail enthusiasts who willingly sacrifice flesh-and-blood body parts through operation in order to obtain armed combat automail appendages. [they call you to a place in the process]