JROTC 100 years ago was so much different than it is now. Army JROTC was brought into being in by the National Defense Act of 1916 signed by President Woodrow Wilson, which authorized loan of military equipment as well as active duty personnel as instructors. Before the NDA of 1916 war broke out in Europe on June 28, 1914. On April 6, 1917 the United States entered World War I by