Memorial Day in the United States, observed on the last Monday of May, is a solemn and reflective holiday dedicated to honoring the men and women who have died in military service to the country. Originally known as Decoration Day, it emerged after the Civil War to commemorate the Union and Confederate soldiers who lost their lives. Today, Memorial Day extends its tribute to all American military personnel who made the ultimate sacrifice in various conflicts. The day is marked by ceremonies at cemeteries and memorials, where flags are placed on the graves of fallen soldiers, and moments of silence are observed. Many communities also host parades, and citizens participate in various patriotic activities. Additionally, it traditionally serves as the unofficial start of the summer season, with families often engaging in outdoor gatherings and paying homage to the courage and dedication of those who gave their lives in service to the nation.