United States Army Basic Combat Training (BCT) is the recruit training program of the United States Army, for service in the U.S. Army, U.S. Army Reserve, or the Army National Guard. Some trainees attend basic combat training along with their advanced individual training (AIT) at one place, referred to as One Station Unit Training (OSUT). A United States Army infantry recruit should expect a more intense, physically demanding basic training located at Fort Benning, Georgia through One Station Unit Training program that is 22 weeks in duration. Other occupations also learn basic warrior tasks and skills and small unit tactics, but tend to focus on more of a balanced approach. These trainees receive basic combat training at different installations including Fort Jackson, South Carolina; Fort Sill, Oklahoma; or Fort Leonard Wood, Missouri. Basic training is designed to be highly intense and challenging. The challenge comes as much from the difficulty of physical training as it does from the psychological adjustment to an unfamiliar way of life. Initial entry training is divided into two parts: basic combat training (BCT) and advanced individual training (AIT). AIT consists of the remainder of the total basic training period and is where recruits train in the specifics of their chosen fields. As such, AIT is different for each available Army career path, or Military Occupational Specialty (MOS). AIT courses can last anywhere from 4 weeks to 7 months, and possibly more for foreign language training. Soldiers are still continually tested for physical fitness and weapons proficiency and are subject to the same duties, strict daily schedule and disciplinary rules as in BCT. Overview Drill sergeants Drill sergeants are the instructors responsible for most of the recruit training that takes place during Initial Entry Training. They accompany recruits throughout the entire training process, instructing and correcting actions in everything from firing weapons to the correct way to address a superior, and are also largely responsible for the safety of recruits. They are recognizable by their distinctive headgear (campaign hats), often referred to as "brown rounds" or "Smokey Bear" hats, as they resemble that character's round park ranger-style hat. Battle buddies Battle buddies generally refer to partners in a combat scenario. However, throughout Basic Training the term is used to describe a disciplinary principle whereby recruits are prohibited from walking anywhere alone. When traveling away from the platoon or a drill sergeant, recruits are expected to travel