Final answer:
Both the German public and the British public were initially excited about the prospect of war, as indicated by historical events such as public demonstrations in Berlin and London. However, as the war continued and hardships increased, this enthusiasm turned into opposition in both countries.
Step-by-step explanation:
The photograph of Kaiser Wilhelm II on the balcony of the Berlin City Palace, coupled with the historical context of public sentiment at the time, illustrates that there were indeed widespread feelings of enthusiasm for war in both Germany and Britain. Initially, the prospect of war evoked a sense of patriotism and the belief that conflicts between nations would be resolved quickly. Massive public demonstrations, like the 30,000 young Germans marching in Berlin and the immense crowds cheering the royal family in London, demonstrate the public support for war.
In summary, based on historical evidence, it's true that both the German and British public were largely excited about the prospect of war. Over time, however, the reality of the war's devastation led to increasing disillusionment and opposition, as seen through protests and strikes, questioning of leadership, and changes in government responsibility.