“Iron March Network” or “Iron March Legacy” are informal names used to describe the network of neo-Nazi groups that emerged directly or indirectly from correspondence on Iron March forums, a now-defunct website ran by Russian Nazi Alisher Mukhitdinov.Iron March groups like the United States’ Atomwaffen Division, U.S. and Canadian group The Base, United Kingdom’s Sonnenkrieg Division, and the Baltic Feuerkrieg Division, typically share similar aesthetics, ideologies, and strategies. Some of the most well known organizations are characterized by a particular style of ‘terrorwave’ propaganda, their strategic use of extreme violence, and use and promotion of terrorism tactics outlined in James Mason’s Siege. Groups are typically made up of young men and boys, with one leader reported to be thirteen years old. Iron March groups are responsible for several murders, including at least five murders in the United States.New neo-Nazi organizations influenced by original Iron March groups continue to emerge today.