(service book) to be published for use in both the Lutheran and Reformed congregations. The king, a Reformed Christian, lived in a denominationally mixed marriage with the Lutheran Queen Louise (1776–1810), which is why they never partook of Communion together. A commission was formed in order to prepare this common agenda. This liturgical agenda was the culmination of the efforts of his predecessors to unify the two Protestant churches in Prussia and in its predecessor, the Electorate of Brandenburg. Major reforms to the administration of Prussia were undertaken after the defeat by Napoléon's army at the Battle of Jena-Auerstedt. As a part of these reforms, the separate leadership structures of both the Lutheran Church (with its chief body, the all-Prussian (Lutheran Upper Consistory), 1750–1808, and the Reformed Churches (with their chief bodies, the all-Prussian Französisches Oberkonsistorium /Consistoire supérieur (French Supreme Consistory); 1701–1808, and the all-Prussian German-speaking Reformed Kirchendirektorium (Church Directory); 1713–1808) were abolished and the tasks of the three administrations were taken on by the t (Section for the cult and public instruction), also competent for the Catholic church and the Jewish congregations, forming a department in the Prussian Ministry of the Interior. Since the Reformation, the two Protestant denominations in Brandenburg had had their own ecclesiastical governments under state control through the crown as Supreme Governor. However, under the new absolutism then in vogue, the churches were under a civil bureaucratic state supervision by a ministerial section. In 1808, the Reformed Friedrich Schleiermacher, pastor of Trinity Church (Berlin-Friedrichstadt), issued his ideas for a constitutional reform of the Protestant Churches, also proposing a union. Under the influence of the centralising movement of absolutism and the Napoleonic Age, after the defeat of Napoléon I in 1815, rather than reestablishing the previous denominational leadership structures, all religious communities were placed under a single consistory in each of the then ten Prussian provinces. This differed from the old structure in that the new leadership administered the affairs of all faiths; Catholics, Jews, Lutherans, Mennonites, Moravians, and Calvinists (Reformed Christians). In 1814, the Principality of Neuchâtel had been restituted to the Berlin-based Hohenzollern, who had ruled it in personal union from 1707 until 1806. In 1815, Frederick William III agreed that this French-speaking territory could join the Swiss Confederation (which was not yet an integrated federation, but a mere confederacy) as the Canton of Neuchâtel. The church body of the prevailingly Calvinist Neuchâtelians did