The Battle of Langensalza was fought on 27 June 1866, during the Austro-Prussian War, near Bad Langensalza in what is now modern Germany, between the Kingdom of Hanover and the Kingdom of Prussia. The Hanoverians won the battle but were then surrounded by a larger and reinforced Prussian army. Unable to link up with their Bavarian allies to the south, the Hanoverians surrendered.
That marked the demise of the Hanoverian Army and the annexation of Hanover into the burgeoning Prussia, which systematically unified Germany into the modern nation state.
Wikipedia https://en.wikipedia.org/wiki/Battle_of_Langensalza_(1866)
Address 99947, Germany
Coordinates 51°7'8.712" N 10°40'29.371" E
