[2] However, the war was unpopular among the population and faced resistance from the Landtag of Liechtenstein, as a result the Johann II promised a loan to the country and refused to have his men fight against other Germans.

[3] The military took up position on the Stilfser Joch in the south of Liechtenstein to defend the Liechtenstein/Austrian border against attacks by the Italians under Giuseppe Garibaldi.

[1] After the German Confederation dissolved in 1866, in combination with its unpopularity among the population due to the 1866 war and the rising cost to maintain it, Liechtenstein disbanded its army of 80 men on 12 February 1868 and declared its permanent neutrality, in which Rheinberger was discharged.

[4][5] Shortly after his death in 1893, the former soldiers of the Liechtenstein army founded a veterans association, of which Andreas Walch was decided as chairman at Rheinberger's funeral.

[6] He alongside Alois Schauer conducted the first survey in Liechtenstein, which included the creation of a new land register.

[7] In 1872 he was a member of the delegation that requested for Johann to allow for casinos to be permitted in Liechtenstein, but he refused and instead gave an interest-free loan to build a dam on the Rhine.