During the war the First Army did not operate effectively in the opinion of the war-directing General Staff. Prince Friedrich Karl's marching orders strained the army's supply lines and prevented a link with Second Army. Fortunately, the First Army was able to link up with the Army of the Elbe, commanded by Karl Eberhard Herwarth von Bittenfeld. On June 28 both armies operated against Mnichovo Hradiště which turned into the Battle of Münchengrätz. The prince then ordered the 3rd Division to march to Jičín. Even though the campaign was successful many men died before reaching the battlefields. The combined operation of two armies worsened the already bad supply situation.[4][5] When the armies marched separately again the First Army was the first in the Battle of Königgrätz, fighting against the Austrians under Ludwig von Benedek until the Second Army of Crown-Prince Frederick William of Prussia arrived.
Order of Battle
The First Army had the following order of battle:[6]
Wagner, Arthur Lockwood (1899). The Campaign of Königgrätz: A Study of the Austro-Prussian Conflict in the Light of the American Civil War. This article incorporates text from this source, which is in the public domain.
Prussian General Staff (1872). The Campaign of 1866 in Germany. This article incorporates text from this source, which is in the public domain.
Wawro, Geoffery (1997). The Austro-Prussian War: Austria's war with Prussia and Italy in 1866. Cambridge University Press. ISBN978-0-521-62951-5.