This manual, TRADOC Pamphlet TP 600-4 The Soldier’s Blue Book: The Guide for Initial Entry Soldiers August 2019, is the guide for all Initial Entry Training (IET) Soldiers who join our Army Profession. It provides an introduction to being a Soldier and Trusted Army Professional, certified in character, competence, and commitment to the Army. The pamphlet introduces Solders to the Army Ethic, Values, Culture of Trust, History, Organizations, and Training. It provides information on pay, leave, Thrift Saving Plans (TSPs), and organizations that will be available to assist you and your Families. The Soldier’s Blue Book is mandated reading and will be maintained and available during BCT/OSUT and AIT. This pamphlet applies to all active Army, U.S. Army Reserve, and the Army National Guard enlisted IET conducted at service schools, Army Training Centers, and other training activities under the control of Headquarters, TRADOC.