G-grandfather Stephan Armbrustmacher came to the USA in 1874 from the small town of Kesseling, Kreis Bad Neuenahr-Ahrweiler, Regierungsbezirk Koblenz, Land Rheinland-Pfalz. We have two military medals, a "Truen Kriegern" cross and the Kriegsdenkmünze 1870/71,which indicate his participation in the Seven Weeks' War/Austro-Prussian War of 1866 and the Franco-Prussian War of 1870-1871, respectively. I'm told that Prussian Regiments of this time consisted of soldiers from specific geographic locations. Is there any way to discover the name of the Regiment that g-grandfather soldiered with?