On 30 January 1927 a small number of armed members of the Frontkämpfervereinigung were involved in a confrontation with a much larger group of unarmed members of the left-wing Republikanischer Schutzbund. The Frontkämpfervereinigung activists opened fire and killed an adult and a six-year-old boy. When they were found not guilty on grounds of self-defence by a jury, the socialists organised a general strike which led to the July Revolt of 1927. Following this, the previously shared leadership was done away with and Hiltl became sole leader of the movement in September 1927. By this time, he had become a supporter of Italian fascism and under his leadership the "Frontkämpfervereinigung" abandoned any pretensions of being pan-nationalist and instead embraced fascism fully. The group operated alongside the Heimwehr, although it had a sometimes troublesome relationship with that movement, due to Hiltl's support for union with Germany. The group also had a youth wing, the "Jungfrontkämpfervereinigung", of which a youthful Adolf Eichmann was a member.