Each of the four German kingdoms (Württemberg, Prussia, Saxony and Bavaria) continued, according to an 1870 military treaty, to have their own war ministries from the Unification of Germany until the adoption of the 1919 Weimar Constitution, that provided for a unified, federal ministry of defence.
[1] The highest executive power rested in the hands of the Ministry of State (German: Staatsministerium), consisting of six ministers: Justice, Foreign Affairs (with the royal household, railways, posts and telegraphs), Interior, Public Worship and Education, War, and Finance.
There was no official Prime Minister in Württemberg until 1876, when the Mittnacht Government was reconsolidated.
[2] The kingdom ended with the abdication of King William II in November 1918, but the political system experienced no further convulsions of a serious character, with a constitution that resembled those of the other German states.
[3][4] As of 1806, the Ministry was organized with a President, Vice-President, six councils, two secretaries, two clerks and a registrar.