What is Memorial Day?

Memorial Day is a U.S. holiday honoring military personnel who died in service. It marks the start of summer and includes traditions like family gatherings and parades. The holiday's roots trace back to ancient Greece and the post-Civil War era in the U.S., where it began as Decoration Day. Major General John A Logan established it on May 30th to honor fallen soldiers. Over time, it evolved into Memorial Day, observed on the last Monday of May. Celebrations include parades, veterans in uniform, and a wreath-laying ceremony at Arlington National Cemetery, with a moment of silence to honor military heroes.

Who called for a nationwide day of remembrance and what was it originally called?

What changes occurred to the name of the holiday over time?