Memorial Day is honored to remember and mourn the U.S. military personnel who have died while serving in the United States Armed Forces. It originated after the Civil War as Decoration Day, a way to honor Union soldiers who sacrificed their lives. Over time, it evolved to commemorate all American service members who have died in all wars. Memorial Day is observed on the last Monday of May and serves as a solemn reminder of the ultimate sacrifice these individuals made for the freedom, safety, and security of the nation. It involves ceremonies such as placing flags or flowers on graves at military cemeteries and pausing for a moment of remembrance. The day also gives Americans a chance to reflect on the value of life and the cost of freedom afforded by these brave men and women.