To annihilate the guerrilla, Lynch started in January 1882 a new offensive with 5,000 men first in the direction of Tarma and then southeast: Huancayo, until Izcuchaca. The Chilean troops suffered enormous hardships: cold, snow, mountain sickness (more than 5,000m). On 9 July 1882 was fought the emblematic Battle of La Concepción. The Chileans had to pull back with a loss of 534 soldiers: 154 died in combat, 277 died to disease and 103 deserted.