An Armed Forces Day, alongside its branch-specific variants often referred to as Army or Soldier's Day, Navy or Sailor's Day, and Air Force or Aviator's Day, is a holiday dedicated to honoring the armed forces, or one of their branches, of a sovereign state, including their personnel, history, achievements, and perceived sacrifices. It's often patriotic or nationalistic in nature, carrying propaganda value outside of the conventional boundaries of a military's subculture and into the wider civilian society. Many nations around the world observe this day. It is usually distinct from a Veterans or Memorial Day.

Veterans Day is a federal holiday in the United States observed annually on November 11, for honoring military veterans of the United States Armed Forces. It began, and now coincides with other holidays, including Armistice Day and Remembrance Day, which are commemorated in other countries, marking the anniversary of the end of World War I. Major hostilities of World War I were formally ended at the 11th hour of the 11th day of the 11th month of 1918 when the Armistice with Germany went into effect. At the urging of major U.S. veteran organizations, Armistice Day was renamed Veterans Day in 1954.