The rank of lieutenant general (or three-star general) is the second-highest rank normally achievable in the United States Army, and the first to have a specific number of authorized positions for it set by statute. It ranks above major general (two-star general) and below general (four-star general).
There have been 101 lieutenant generals in the U.S. Army since 1 January 2020, eight of whom were promoted to four-star general. All 94 achieved that rank while on active duty in the U.S. Army. Lieutenant generals entered the Army via several paths: 55 were commissioned via Reserve Officers' Training Corps (ROTC) at a civilian university, 29 via the U.S. Military Academy (USMA), nine via ROTC at a senior military college, five via Officer Candidate School (OCS), one via ROTC at a military junior college, one via cross-commission at the USAFA and one via direct commission (direct).
Entries in the following list of lieutenant generals are indexed by the numerical order in which each officer was promoted to that rank while on active duty, or by an asterisk (*) if the officer did not serve in that rank while on active duty in the U.S. Army or was promoted to four-star rank while on active duty in the U.S. Army. Each entry lists the general's name, date of rank, active-duty positions held while serving at three-star rank, number of years of active-duty service at three-star rank (Yrs), year commissioned and source of commission, number of years in commission when promoted to three-star rank (YC), and other biographical notes.
Aside from the conventional role of lieutenant generals as corps or field army commanders, said billets also include senior staff positions under the authority of the four-star chief and vice chief of staff (such as the director of the Army staff), high-level specialty positions like the chief of engineers, surgeon general and chief of Army Reserve, deputy commanders of four-star Army commands and the commanders of the Army service component commands. The superintendent of the United States Military Academy has also been a lieutenant general without interruption since 1981, as has been the director of the Army National Guard since 2001.
About 30 to 50 joint service three-star billets exist at any given time that can be occupied by an Army lieutenant general, among the most prestigious being the director of the Joint Staff (DJS), principal staff advisor to the chairman of the Joint Chiefs of Staff and historically considered a stepping stone to four-star rank. All deputy commanders of the unified combatant commands are of three-star rank, as are directors of Defense Agencies not headed by a civilian such as the director of the Defense Intelligence Agency (DIRDIA). Internationally-based three-star positions include the United States military representative to the NATO Military Committee (USMILREP) and the security coordinator for Israel and the Palestinian National Authority. All nominees for three-star rank must be confirmed via majority by the Senate before the appointee can take office and thus assume the rank.
The U.S. Code states that no more than 46 officers in the U.S. Army may hold the rank of lieutenant general on the active duty list, aside from those on joint duty assignments. Three-star positions can be elevated to four-star grade or reduced to two-star grade when necessary, either to highlight their increasing importance to the defense apparatus (or lack thereof) or to achieve parity with equivalent commands in other services or regions. Few three-star positions are set by statute, leading to their increased volatility as they do not require congressional approval to be downgraded.
Military nominations are considered by the Senate Armed Services Committee. While it is rare for three-star or four-star nominations to face even token opposition in the Senate, nominations that do face opposition due to controversy surrounding the nominee in question are typically withdrawn. Nominations that are not withdrawn are allowed to expire without action at the end of the legislative session.
Additionally, events that take place after Senate confirmation may still delay or even prevent the nominee from assuming office.