How does the wartime situation in Paris affect the Sunday habits of Morissot and Sauvage in Two Friends?

In "Two Friends" by Guy de Maupassant, the wartime situation in Paris profoundly alters the Sunday habits of Morissot and Sauvage. Instead of enjoying their customary fishing trips, the two friends are confined by the realities of war, which instills a sense of tension and danger in their lives. Their usual leisure is replaced by a longing for normalcy, but ultimately, their desire to escape the grim atmosphere leads them to a tragic fate, highlighting the stark impact of war on personal freedoms and relationships.