While proceeding up north, they head towards Ypres, which Linus recognized as the site of a series of battles during World War I. They arrive at a field of red poppies, which grew throughout the wastelands of battles fought during the war, and which serves as a marker for the Ypres battle site. Linus then recites John McCrae's famous poem "In Flanders Fields", after directing the group to the British field dressing station where McCrae was inspired to write the poem.