It depends on what type of position you are talking about. If you are asking about an operational position, you would need to spend time as either a Navy SEAL, Army Ranger or Special Forces, or Air Force Special Operations, before being chosen to join one of these branches' Tier One units, such as US Army Delta or US Air Force 24th Special Tactics Squadron.
However, not everyone within JSOC is an operator. They also have a lot of support personnel, who help gather and analyze intelligence to assist the guys in the field. That is another way to be a part of JSOC, if you can't be in an operational position.
The principal joint Special Operations Forces organization tasked to meet all special operations requirements in major operations, campaigns, or contingencies is the Joint Special Operations Command (JSOC). JSOC is a sub-unified command under the U.S. Special Operations Command (USSOCOM) and is responsible for planning and executing special operations missions. It integrates various special operations units from different branches of the U.S. military to effectively respond to complex and high-stakes situations.
SOCOM is the US military acronym for Special Operations Command; the command that coordinates special operations within the US.
Functional Combatant Commands
Joint Special Operations University was created in 2000.
U.S. Special Operations Command
Special Operations Command parachute team was created in 1991.
Air Force Special Operations Command was created in 1990.
SOCOM is the Army's special operations command. JSOC is the Joint Special Operations Command and encompasses all of the special ops units in the United States military, including those from Air Force, Navy, and Marines. Both commands are located at Ft. Bragg, NC.
The Command and control helps the Joint Force Commander and staff integrate, synchronize, and direct joint operations. It helps with intelligence, movement, and protection.
JSOC is the Joint Special Operations Command and encompasses all of the special ops units in the United States military, including those from Air Force, Navy, and Marines. JSOC includes the Navy SEALs, the group credited with killing terrorist mastermind Osama bin Laden on May 1, 2011.
NAVSOC is the acronym for the Naval Special Operations Command, which has also been known as Naval Special Warfare Command (NAVSPECWARCOM), and its current form, Naval Special Warfare Command (NSWC). NSWC is Naval organization attached to the United States Special Operations Command, which is tasked with coordinating all U.S. SpecOps forces.
Marine Corps Special Operations Command