Понятно, с этими разобрались, а что имел в виду Niehorster:
21 Jun 43, XIII Corps, 2nd Army, Army Group Center, Kursk
[Niehorster: 4 Jul 43, organized with two companies of six Marder IIs each; 3./ equipped with two self-propelled 50mm and four self-propelled 128mm guns]
