The Military Merit Medal was a military decoration of the Empire of Austria-Hungary. It was founded by Emperor Franz Joseph I on March 12, 1890. The Military Merit Medal is often referred to as the "Signum Laudis" after the inscription on the reverse of the medal.

Charles I or Karl I was Emperor of Austria, King of Hungary, King of Croatia, King of Bohemia, and the last of the monarchs belonging to the House of Habsburg-Lorraine to rule over Austria-Hungary. The son of Archduke Otto of Austria and Princess Maria Josepha of Saxony, Charles became heir presumptive of Emperor Franz Joseph when his uncle Archduke Franz Ferdinand of Austria was assassinated in 1914. In 1911, he married Princess Zita of Bourbon-Parma. He is venerated in the Catholic Church, was beatified by Pope John Paul II on 3 October 2004, and is known to the Catholic Church as Blessed Karl of Austria.