 From 1918 to 1920 he voluntarily joined soldiers in their internment so as to continue his pastoral care.Weis was ordained priest in Speyer Cathedral on 4 October 1901.He then spent time as a chaplain in Mittelbexbach (10 October 1901 – 30 August 1905), then time in Gersheim (31 August 1905 – 16 October 1905), then in Landau in der Pfalz (17 October 1905 – 30 June 1909).