Answer:
The significance of the narrator coming "back restless" from the Great War is that he wants new experiences. The fact that he is unable to sit still in a chair suggests that he is eager to explore and experience new things, which may be a result of his time in the war. While he may also be struggling with memories of the war, the fact that he is described as restless suggests that he is primarily seeking out new experiences rather than simply trying to avoid memories of the past.
Step-by-step explanation: