The nationalist leader John Redmond pledged support for the British war effort and many Irishmen served in the British Army (see Ireland and World War I), but the war and the frustration of nationalist ambitions regarding Home Rule led to a radicalisation of Irish nationalism. In 1916, a group of IRB activists within the Irish Volunteers led an insurrection aimed at Irish independence in Dublin, known as the Easter Rising. The rebellion did not have popular support and was put down within a week, but the execution of its leaders, and the subsequent wholesale arrest of radical nationalist activists proved very unpopular with the nationalist public. Coming directly after the Rising, a further attempt was made at the Irish Convention to resolve the impasse over Home Rule, but without success. Finally, the British proposal to extend conscription for the war to Ireland provoked widespread resistance, (see Conscription Crisis of 1918) and discredited the Irish Parliamentary Party who had supported the British war effort.