Question: What is the name of this former commander, intelligence officer, marine and naval commando who served in the Argentine Navy that the father of  Dagmar Hagelin sought to bring to justice?
Sentence (from "Dagmar Hagelin"): Dagmar's father, Argentine-Swedish businessman Ragnar Hagelin has ever since worked to have the responsible people brought to justice, accusing Alfredo Astiz.
Relevant evidence: Yes