Basic training
For east coast recruits, phase two is swim qualification, rifle qualification, and Team Week, a week of maintenance duties for the island as a show of how to perform base support tasks while still keeping military bearing and attention to detail. Phase three brings the San Diego recruits back to the recruit depot where they finish up with final drill, final inspection, more PT and confidence courses, and graduation. During third phase, west coast recruits also go back into the field one last time to do the Crucible event. Parris Island recruits finish with field training, final drill and inspection, the Crucible, and graduation. Note that recruits going to either depot receive exactly the same training, if in a different order. An important part of this process is training recruits to adopt and live by the motto, "Every Marine a rifleman".
Upon completion, recruits proceed to receive further training at the School of Infantry (SOI). All non-infantry MOS Marines are trained at the Marine Combat Training Battalion (MCT), while infantry MOS Marines are trained at the Infantry Training Battalion (ITB).
MCT and ITB training is conducted at one of two locations, SOI-East at Camp Lejeune in Jacksonville, North Carolina (for Parris Island graduates) and SOI-West at Camp Pendleton in San Diego, California (for San Diego graduates).
Marine Combat Training Battalion (MCT) is a 29-day course. Marines learn the basics of combat marksmanship, counter-improvised explosive device techniques, how to conduct the defense of a position, convoy operations, combat formations, fireteam assaults, patrolling, urban warfare, use of the AN/PRC-119 radio, reporting military intelligence, land navigation, and the use of hand grenades, the M203 grenade launcher, M249 Squad Automatic Weapon, and M240 machine gun. Training also includes combat conditioning by running an obstacle course, conducting marches, physical training, and Marine Corps Martial Arts Program. Upon completion of Marine Combat Training, the Marine is to have gained the knowledge and ability to operate in a combat environment as a basic rifleman and to perform his or her primary duties under fire. (The main contrast with Army recruit training is that nearly identical training is integrated into Basic Combat Training, so there is no follow-on school.) Upon completion, Marines proceed to their MOS-specific school.
In Infantry Training Battalion (ITB), infantry MOS (03XX) Marines receive 59 days of training in infantry skills, including advanced marksmanship, combat patrolling, land navigation, and a wide array of other infantry skills. Upon completion of ITB, newly qualified Marine infantrymen proceed to their assigned units.

U.S. Navy: The United States Navy currently operates boot camp at Recruit Training Command Great Lakes, located at Naval Station Great Lakes, near North Chicago, Illinois. Instead of having Drill Sergeants or Drill Instructors like other branches of the U.S. Armed Forces, the U.S. Navy has RDCs (Recruit Division Commanders) that are assigned to each division. Training lasts approximately eight weeks (although some recruits will spend as many as nine weeks in training due to the somewhat complicated processing cycle). Days are counted by a system that lists the week and day that they are on, for example, 7-3 for week 7 day 3. The first approximate week is counted P-1, P-2, etc. which denotes that it is a processing day and does not count as part of their 8-week training period. Recruits are instructed on military drill, watchstanding, basic seamanship, water survival skills, first aid, basic shipboard damage control, firefighting, shipboard communication, familiarization with the M9 pistol and Mossberg 500 shotgun (the Navy no longer gives instruction on the M16 in boot camp), pass the confidence chamber (tear-gas-filled chamber), PT, and the basic essentials on Navy life. Recruits also attend many classes throughout boot camp on subjects such as Equal Opportunity, Sexual Assault Victim Intervention, Uniform Code of Military Justice, recognition of naval aircraft and vessels, U.S. naval history, and more. In order for recruits to pass boot camp, they are physically and mentally tested on a 12-hour exercise called Battle Stations which consists of 12 different scenarios involving firefighting, navigating smoke filled compartments, first-aid knowledge, survival at sea, mass casualties, shipboard flood control, bomb detection, and many other skills that they have been learning in the previous 7 weeks. After completion of boot camp, freshly minted sailors are sent either to various "A" Schools located across the United States—where they begin training to receive their ratings (jobs)—or to apprenticeship training, where they then enter the fleet without a designation.
The Navy formerly operated Recruit Training Centers in San Diego, California; Orlando, Florida; Meridian, Mississippi; and Port Deposit (Bainbridge), Maryland. From 1942 to 1946—during and immediately following World War II—the Navy had two additional training sites: Naval Training Station (USNTS) Sampson (renamed Sampson Air Force Base in 1950), near Seneca Lake, New York, where over 400,000 recruits were trained, and Farragut Naval Training Station in Bayview, Idaho.

U.S. Air and Space Forces: The U.S. Air and Space Forces' Basic Military Training (BMT) is seven and a half weeks long, as they do not count the first week ("Week 0"). BMT is 63 calendar days long. It is conducted at Lackland Air Force Base in San Antonio, Texas. Formerly, trainees were referred to as "airman" from day one of BMT. This has been changed; now, personnel are referred to as trainees until the Airman's Coin Ceremony in the eighth week of training, when they receive their Airman's Coin. Trainees receive military instruction (including the Air Force core values, flight and individual drill, and living area inspections), academic classes (covering topics such as Air Force history, dress and appearance, military customs and courtesies, ethics, security, and alcohol/drug abuse prevention and treatment), and field training (including protection against biological and chemical attack, basic marksmanship on the M4 carbine as well as self-aid buddy care). Following BMT, airmen/guardians go to a technical school (or 'tech school') where they learn the specifics of their Air Force Specialty Code (AFSC), which is equivalent to the MOS (Military Occupational Specialty) in the Army and Marines, the Navy's NEC (Naval Enlisted Classification) code, or the Coast Guard's ratings.
All non-prior-service enlistees are required to complete BMT, including those enlisting in the Air National Guard and Air Force Reserve Command. Reserve component enlistees receive the same training as their active-duty counterparts. Credit can be given on a case-by-case basis for enlistees with college credit. Eagle Scouts and service in the Civil Air Patrol qualify for promotion to E-2 (airman) or E-3 (airman first class) upon graduation from BMT. The stripes are not worn until graduation, though trainees are paid at the higher pay grade.
Lackland AFB has been associated with BMT for almost the Air Force's entire history. From 1950 to 1956, 300,000 airmen received BMT at Sampson Air Force Base in New York. In 1951, Parks Air Force Base in Dublin, California, became a BMT center, with training beginning in March 1952. BMT at Parks AFB ceased later in the decade and the installation was transferred to the U.S. Army in 1959. For a brief time between 1966 and 1968, the Air Force operated a second BMT at Amarillo Air Force Base in Amarillo, Texas.
Unlike the Army and Navy, but like the Marine Corps (throughout boot camp) and Coast Guard (during the first section of boot camp), trainees are required to refer to all airmen and guardians of all ranks as "sir" or "ma'am". Trainees are required to preface speaking to military training instructors with their reporting statement: "Sir/Ma'am, Trainee (the recruit's surname) reports as ordered".
An additional two weeks of BMT was added to the program on November 1, 2008, extending the duration of BMT from six and a half weeks to eight and a half weeks. BMT has been tailored to incorporate some of the additional warfighting skills to coincide with increased Air Expeditionary Force (AEF) rotations and more frequent support of its sister services during those rotations. In 2015, BMT was shortened once again to seven and a half weeks. Trainees still stay at Lackland for eight and half weeks, however, the eighth week following graduation they are moved to a more relaxed environment under a program called Airman's Week, which is designed to transition trainees to technical training.

U.S. Coast Guard: Recruit training for the U.S. Coast Guard is held at Coast Guard Training Center Cape May in Cape May, New Jersey. The Coast Guard base on Government Island (now known as Coast Guard Island) Alameda, California was also used as a second major recruit training center until it was closed in 1982. The official standard recruit training cycle lasts eight weeks. A limited number of recruits may face reversion to earlier weeks of training should they exhibit egregious deficiencies in attitude and/or aptitude.