Despite mainstream Labour Party's support for the war effort, the Independent Labour Party was instrumental in opposing conscription through organizations such as the Non-Conscription Fellowship while a Labour Party affiliate, the British Socialist Party, organized a number of unofficial strikes. Arthur Henderson resigned from the Cabinet in 1917 amid calls for party unity to be replaced by George Barnes. Overall, the majority of the movement continued to support the war for the duration of the conflict, and the British Labour Party, unlike most of its equivalents on the Continent, did not split over the war.