Women have served in every single armed conflict the United States has ever engaged in, but their contributions are typically missing from historical narratives. National security and military history reading lists, including this one by National Security Advisor Gen. H.R. McMaster, frequently only include books written by and about men. Despite women’s contributions to national security throughout history, they are time and again overlooked by leadership even in the 21st century. Yet, we will only learn from our past if we fully understand the sacrifices made by both men and women who served our country.