[1] Walch worked as a bricklayer before in 1844 he joined the Liechtenstein military, where he was promoted to corporal in 1846 then sergeant in 1849 and feldwebel in 1852.

[2] Walch served in the Austro-Prussian War of 1866, in which 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.

[3] 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.

[4][5] In 1893 the former soldiers of the Liechtenstein army founded a veterans association, of which Walch was decided as chairman at Peter Rheinberger's funeral.

[1] Walch married Maria Anna Seger (1 September 1831 – 10 June 1911) in 1856 and they had fourteen children together.