Serbian National Defense Council (SND) was founded as Српска Народна Одбрана (Srpska Narodna Odbrana) by Michael Pupin in 1914 in New York City, USA, in midst of anti-Serb tensions leading up to the First World War.

[2] Soon after being founded, more than 263 branches sprung up across the United States, the Dominion of Canada and began aiding in the war effort at a time when America had yet to enter the conflict[3].

[6] By 1941, SND headquarters were relocated to Chicago, Illinois, under the leadership of Mihailo Dučić, and the organization's activities and influence waned.

With the arrival of Mihailo's brother, Jovan Dučić, a poet/diplomat, the Serbian National Defense Council was revived.

[8] After World War II, the US government under the FARA act, began an intensive probe into all Serbian Nationalist organizations in the US, primarily SND, and continued until 1947.