Believe me it was. Ive got a decent bibliography on the subject and the final conclusion is that Hiters views of Pax- Germanica, anti-semitism militirism, Lebensraum, Volkgemeinshaft etc were widely held. The National Socialists simply built on what was already there.
This is not wholly wrong yet it's not exactly right. It's true that the main contents of german Nationalsocialism already existed in the late 19th century. These were created by few Intellectuals obsessed with antisemitism ,some kind of distorted gemanic mythicism and the belief of supremacy of aryan people above those of non-aryan descent.
Nevertheless, this does not mean their view were shared by the majority of the people or at least that these were a special german feature.
Strong nationalistic views and a preference for national myths were not uncommon among european nations that time, especially prior to ww1.
As for militarism, yeah this attitude used to prevail in imperial Germany - but not just there. France, for instance, managed to mobilize a higher percentage of her able-bodied male population into the french armed forces than the germans could do vice versa.
Yet I doubt militarism was still going strong in Germany after the experiences made from 1914-18.
As for "Volksgemeinschaft" :Except for times of national euphoria, germans were always used to identify themselves first as members of their native region, eg. as Bavarians, Prussians , Pommerians, Saxons etc. and then as germans as members of the same Nation. The idea of a homogenous community of people without different social classes and non-existend Individualism was actually strange to them.( Of course, german citizens wre expected to obey orders of their authorities and to fight and sacrifice themselves for their fatherland.) Compare the german post-ww1 society to the Nazi-idea of the Volksgemeinschaft. I should not be much resemblance.
The jewish people in Germany seemed to be quite well
integrated into german society. Most of them considered themselves as beeing german and in general, they weren't less patriotic than non-jewish
germans. Take for instance Fritz Haber who as a chemist of jewish descent and head of a research-group for chemical weapons thought it was his duty to provide germany with the capability to carry out davastating gas attacks by the use of chlocic gas. Even today some holocaust survivors say that german jews loved their country that time.
Now, how could this be if the majority of the german people harboured antisemitic feelings , shunned , rejected and mistreated their jewish fellow citizens?