Memorial Day - What is the name of the national cemetery?

Question 1: Memorial Day, a U.S. federal holiday observed on the last Monday of May, honors the men and women who died while serving in which branch of the U.S. armed forces?
Question 2: In what year did Memorial Day, originally known as Decoration Day, become an official federal holiday?
Question 3: Which U.S. President is credited with delivering one of the most famous Memorial Day speeches, the Gettysburg Address, in 1863?
Question 4: What is the name of the national cemetery, located in Arlington, Virginia, that serves as the final resting place for many of the nation's fallen service members?
Question 5: Which iconic American poem, written by John McCrae in 1915, is often recited on Memorial Day and features the line "In Flanders fields the poppies blow"?