What prompts the two Frenchmen to cross the front-line of the war in the story 2 friends?

In the story "Two Friends" by Guy de Maupassant, the two Frenchmen, Morissot and Sauvage, are prompted to cross the front line of the war by their desire to fish in a familiar spot despite the ongoing conflict. Their longing for normalcy and the simple pleasures of life leads them to temporarily set aside the dangers of the war. The act of fishing becomes a symbol of their friendship and a fleeting escape from the harsh realities surrounding them. Ultimately, their decision underscores the tragic consequences of war and the loss of innocence.