In 1982 amid Guatemala’s civil war, 20 army commandos invaded Dos Erres disguised as rebels. The squad members, or Kaibiles, killed more than 250 people. Only a handful survived. One, a 3-year-old boy, was abducted by a Kaibil officer and raised by his family. It took 30 years for Oscar Alfredo Ramírez Castañeda to learn the truth.