What was one significant reason why opposition to the Nazis increased during wartime?

The increase in opposition to the Nazis during wartime can be largely attributed to the harshness of Nazi rule and the growing fear of military defeat. As the war progressed, the German populace experienced significant hardships, including food shortages, loss of family members in battle, and the oppressive nature of the regime. The government's propaganda efforts to promote the idea of an inevitable victory became increasingly difficult to sustain in the face of mounting military failures. This created widespread discontent, as many began to question the Nazis' ability to lead Germany to success.

People's frustration grew from the impact of the war on their daily lives, which was compounded by the regime's brutal measures to maintain control. Those living under Nazi rule faced not only the physical challenges of wartime but also the psychological strains of oppression and fear. Fear of the Gestapo did discourage some from openly opposing the regime, but as the realities of war set in and the hope for victory diminished, individuals began to voice their dissent more publicly. The harsh experiences and realization that the war might not end in success led citizens to reconsider their support for a regime that had, until then, maintained a facade of strength and stability.