- For the first time, a railway and an electric telegraph were actively used to mobilize the army  , which made it possible to follow the actions of the corpses scattered over hundreds of miles and coordinate them as conveniently as if they were removed from the commander for the normal mileage of an ordinary horse  .
- The introduction of the first personal signs during the Austro-Prussian war of 1866 met a massive rejection of innovation by even the most disciplined Prussian soldiers. They gave out personal signs issued to them in droves in droves, at best they “forgot” in the wagon train. The fact is that any soldier in a war sooner or later becomes superstitious , especially with regard to death. Therefore, the requirement of the commanders to be sure to wear the "death messenger" aroused superstitious fear among the Prussian soldiers that this "messenger" would bring about quick death. They even said that the tin plate of a personal sign has magical power to attract bullets to itself. It is not surprising that such a superstitious prejudice against personal signs continued to live in the German army until the outbreak of World War II . Only the active propaganda by the Wehrmacht officers among their soldiers of the need to constantly wear a personal badge, as a guarantee of receiving a pension by the soldier’s relatives in case of his death, finally turned the tide and wearing personal badges by all military personnel in the German army became the norm  .
- After the defeat of Austria in the Austro-Prussian war of 1866, when Prague was occupied by the Prussian forces, the Austrian command came to the conclusion that the defense value of the city finally lost its meaning. This led to the decision to demolish most of the city fortifications, especially around Nove Mesto and Lesser Town . The result was the rapid development of the suburbs of Prague: Kralovské Vinohrady , Zizkov , Karlin , Vrsovice , Nusle , Smichov , Koshirzhe , Podoli , Visochani and many others, where, unlike the densely built-up old quarters, tens and hundreds of new plants and factories appeared attracting labor from the countryside  .
- Only after the Austro-Prussian war of 1866 did active reform of the existing special services and the creation of new ones begin. This was due to the fact that Wilhelm von Stieber , head of intelligence in Prussia, was able to provide his government with all the necessary information about political and military opponents (deployment of troops, their morale, tasks and plans, etc.), which Bismarck did not have before  .
- With the transition in the 60s. XIX century from smooth-walled guns to rifled howitzers began to be made rifled. In the wars of the 2nd half of the XIX century. as field fortifications increased, the need for howitzers increased.
- The experience of the Napoleonic wars is completely revised  .
|Medal "For the defense of Tyrol in 1866"||Medal "Prague Police in 1866"|
- Mikhail Kutuzov. The military as an engine of progress . Stra [tag] .Ru (September 2002). - Military officers created a railway and a telegraph in the country. Date of treatment June 17, 2013. Archived June 17, 2013.
- Svechin A.A. Chapter Five. War for hegemony in Germany 1866. Operational deployment. // The evolution of military art . - M.-L.: Voengiz, 1928 .-- T. II.
- The Kalashnikov Magazine No. 5 of 2000
- Prague in the 19th — 20th centuries . praga-info.ru. - The development of the city after the Austro-Prussian war. Date of treatment June 17, 2013. Archived June 17, 2013.
- Sergey Chertoprud. Legislation to protect state secrets in the Russian Empire at the beginning of the XX century. Analysis of their application experience Archived July 12, 2007 at Wayback Machine