… contribution while on active duty. Chapter 33 : The new Post-9/11 GI Bill®, which was signed into law on June 30, 2008, will not go into effect until August 1, 2009. … served on active duty on or after September 11, 2001. For more information, please visit the News and Events page. Important Note: There is a cap on the yearly benefit … contribution while on active duty. Chapter 33 : The new Post-9/11 GI Bill®, which was signed into law on June 30, 2008, will not go into effect until August 1, 2009. …