The number of 4-star generals in the US Army is not fixed and can fluctuate over time. This is because the number of 4-star generals is determined by the needs of the Army and the number of positions available for such officers to fill. Therefore, the number of 4-star generals can change depending on the size of the Army, the number of combatant commands, and other factors.
According to some sources, there were 13 active-duty 4-star generals in the US Army as of 2021. However, it is important to note that this number can vary over time due to promotions, retirements, and other factors. Additionally, there may be other generals who are not currently serving in active duty but still hold the rank of 4-star general in the Army Reserve or National Guard.
One factor that can influence the number of 4-star generals in the US Army is the size of the Army. As the Army grows or shrinks in response to changes in national security priorities or other factors, the number of 4-star generals may also change to reflect the changing needs of the service. For example, during times of war or conflict, the Army may need more high-ranking officers to lead combat operations, which could lead to an increase in the number of 4-star generals. Conversely, during times of peace or relative stability, the Army may not need as many high-ranking officers, which could lead to a decrease in the number of 4-star generals.
Another factor that can influence the number of 4-star generals in the US Army is the number of combatant commands. A combatant command is a military organization that has a specific geographic or functional responsibility, such as US Central Command (CENTCOM), which is responsible for military operations in the Middle East. Each combatant command is led by a 4-star general or admiral, so as the number of combatant commands changes, so too can the number of 4-star generals. For example, if a new combatant command is established, this could lead to the need for an additional 4-star general to lead it.
In addition to these factors, promotions and retirements can also impact the number of 4-star generals in the US Army. When a general is promoted to the rank of 4-star, this increases the number of 4-star generals in the Army. Conversely, when a 4-star general retires, this decreases the number of 4-star generals. Additionally, some 4-star generals may be assigned to non-Army positions, such as serving as the Chairman of the Joint Chiefs of Staff or as the Secretary of Defense, which can also impact the number of 4-star generals in the Army.
It is also worth noting that the number of 4-star generals in the US Army is relatively small compared to the total number of officers in the service. According to the Army’s 2020 posture statement, there were approximately 101,500 officers in the Army, of which only a small fraction held the rank of general. Therefore, while the number of 4-star generals may be important for the leadership and management of the Army, it represents only a small portion of the overall officer corps.
In conclusion, the number of 4-star generals in the US Army is not fixed and can vary over time depending on a number of factors, including the size of the Army, the number of combatant commands, and promotions and retirements. As of 2021, there were reportedly 13 active-duty