The Tomb of the Unknown Soldier and Armistice Day commemorate the sacrifices made by military personnel who died in service, particularly those whose remains were never identified. The Tomb, located in Arlington National Cemetery, serves as a national tribute to all fallen soldiers, while Armistice Day, celebrated on November 11, marks the end of World War I. Together, they symbolize national appreciation for the bravery and sacrifice of service members, fostering a sense of remembrance and gratitude.