I would like to know this especially in comparison with world war I
Much of Germany's citizens still had bitter memories of suffering during and right after World War I. There was no National Zeal for another war like their was in the summer of 1914. Many Germans were actually very afraid of being embroiled in another World War. Everyone lost family and friends in the trenches in World War I, many Germans starved on the home front. There was no love for war - at least among many of the middle-aged and older Germans.
However, among the German youth, especially ones that were old enough to join the military, there was a sense of national purpose and many want to experience a grand adventure - much like their fathers and uncles had, at the start of the Great War. Also, Nazi Propaganda and culture had fully immersed German youths that Germany had been stabbed in the back, and that the loss of World War I was do to weak politicians and communist agitators and other undesirable elments at home. So for many fighting aged and younger Germans, another war was welcome - in the sense that they wanted to right the wrongs that France and England had placed upon them. They wanted to fight for their nation and for their ideology.
Many Germans agreed with the annexation of Austria - to them all German peoples should be united under this flourishing regime. Many Germans thought that rescuing and reincorporating Sudeten Germans from Czechoslovakia was again the right thing to do. Many Germans thought that Danzig needed to be given back to Germany, and that former German lands lost in the Versailles Treaty to form Poland needed to be given back to Germany. Many Germans believed that the French border states of Alsace and Lorraine were historically German and thus needed to be reunited with Germany.
These lines and sentiments were fueled and flamed by Nazi propaganda. So in that sense Germans believed Germany needed to reclaim former territory of their once larger nation. Many Germans believed that Germany should no longer be tied down by the shameful Versailles Treaty. Also, one needs to consider that besides the Munich Conference, Germany had essentially been getting away with invading and annexing its neighbors with nothing more than a very light slap on the wrist. Germany was getting all it wanted with hardly any repercussions, so a lot of Germans believed that the Allies would just let Germany do what it wanted, but they knew that at some point Germany was going to cross the line of demarcation - which was the Polish issue. So on one hand most Germans felt that they had been wronged on a national level and thus if Germany had to go to war to take back certain territories then that was fine; but on the other hand Germans feared another horrific slaughter of their young men like what happened in the trenches during World War I. Of course little did they know that this war, this Second World War, would be far worse to them and their country than the first one. They were sheep being lead to the slaughter!