In 1978, Loe de Jong of the Dutch Institute for War Documentation was confronted with stories about Aantjes's alleged sympathies for Nazism. Although the Institute usually did not respond to such rumors, De Jong - considering the high position of Aantjes - believed that further investigation was necessary.
In 1978, Loe de Jong of the Dutch Institute for War Documentation encountered stories suggesting Aantjes might have been sympathetic to Nazism. Given the Institute's usual approach of ignoring such claims, De Jong thought a more in-depth investigation was warranted due to Aantjes's prominent role.