 Complete the following phrase:  Unable to defeat the rebels with conventional military tactics, the Spanish government sent Gen. Valeriano Weyler y Nicolau nicknamed The Butcher, who reacted to these rebel successes by introducing terror methods: periodic executions, mass exiles, and the destruction of farms and crops. These methods reached their height on 21 October 1896, when he ordered all countryside residents and their livestock to gather in various fortified areas and towns occupied by his troops within eight days. Hundreds of thousands of people had to leave their homes, creating appalling conditions of overcrowding in the towns and cities. This was the first recorded and recognized use of concentration camps where non-combatants were removed from their land to deprive the enemy of succor and then the internees were subjected to appalling conditions. The Spanish also employed the use of concentration camps 