John Henry Hagmann

For years, a doctor now accused of performing macabre procedures on the troops that he trained took steps to cloak his battlefield-medicine classes in secrecy. The doctor, John Henry Hagmann, often required that those who took or helped teach his courses sign non-disclosure agreements.

For years, a doctor now accused of performing macabre procedures on the troops that he trained took steps to cloak his battlefield-medicine classes in secrecy. The doctor, John Henry Hagmann, often required that those who took or helped teach his courses sign non-disclosure agreements.