The Unitas Fratrum is established in the village of Kunvald, on the Bohemian-Moravian borderland. It is to date the second oldest Protestant denomination.

The Moravian Church (Czech: Moravská církev), or the Moravian Brethren, formally the Unitas Fratrum (Latin: "Unity of the Brethren"), is one of the oldest Protestant denominations in Christianity, dating back to the Bohemian Reformation of the 15th century and the Unity of the Brethren (Czech: Jednota bratrská) founded in the Kingdom of Bohemia, sixty years before Luther's Reformation.

The church's heritage can be traced to 1457 in Bohemian Crown territory, including its crown lands of Moravia and Silesia, which saw the emergence of the Hussite movement against several practices and doctrines of the Catholic Church. However, its name is derived from exiles who fled from Bohemia to Saxony in 1722 to escape the Counter-Reformation, establishing the Christian community of Herrnhut; hence it is also known in German as the [Herrnhuter] Brüdergemeine [sic] ("Unity of Brethren [of Herrnhut]").The modern Unitas Fratrum has about one million members worldwide, continuing their tradition of missionary work, such as in the Americas and Africa, that is reflected in their broad global distribution. Moravians continue many of the same practices established in the 18th century, including placing a high value on a personal conversion to Christ (called the New Birth), piety, good works, evangelism (especially the establishment of missions), Christian pacifism, ecumenism, and music.The Moravian Church's emblem is the Lamb of God (Agnus Dei) with the flag of victory, surrounded by the Latin inscription "Vicit agnus noster, eum sequamur" ('Our Lamb has conquered; let us follow Him').