U.S. Army

Overview

The United States Army is 251 years old and, as of this writing, being rebuilt while it fights. Between April 2025 and September 2026, the land service branch of the Department of Defense has been put through the most sweeping structural transformation in a generation — new four-star commands stood up, brigades converted, weapons programs canceled — and simultaneously through the deepest leadership upheaval in its modern history: its 41st chief of staff was ousted mid-war in April 2026, its civilian secretary resigned in September 2026, and a cut of up to 20 percent of the military’s general and admiral positions is expected to be announced at the end of September 2026 (Congressional Research Service; Associated Press; The Manila Times). The Congressional Research Service puts the moment in historical perspective: “Since Congress established the Army in 1775, it has reorganized or transformed its forces many times” (Congressional Research Service). What makes this round unusual is the speed, the scale, and the fact that it is happening during an active war with Iran.

The Army describes itself as “the strategic landpower of the joint force” and “the premier all-volunteer force,” founded on June 14, 1775, when the Second Continental Congress established the Continental Army — more than a year before the Declaration of Independence (U.S. Army). It is built from three components: the Active Component, the Army National Guard, and the Army Reserve (Congressional Research Service).

The April 2026 leadership purge — and what followed

On April 2, 2026, Defense Secretary Pete Hegseth ousted the Army’s top uniformed officer and two other generals, with the Pentagon giving no reason for the departures (Associated Press). Gen. Randy George “will be retiring from his position as the 41st Chief of Staff of the Army effective immediately,” said Pentagon spokesman Sean Parnell — truncating a four-year term George had held since August 2023 under the Biden administration (Associated Press). George, a West Point graduate and infantry officer who served in the first Gulf War as well as Iraq and Afghanistan, had previously been Defense Secretary Lloyd Austin’s top military aide from 2021 to 2022 (Associated Press).

Removed alongside him were Army Gen. David Hodne, who had been head of the brand-new Army Transformation and Training Command, and Army Maj. Gen. William Green, the Army’s chief of chaplains — Green fell just over a week after Hegseth announced chaplain reforms directing chaplains to focus more on God and less on therapeutic “self-help,” and stripping rank insignia from chaplain uniforms in favor of religious insignia (Associated Press). A Pentagon official said Gen. Christopher LaNeve would step in as acting Army chief of staff — a meteoric rise for an officer who was only a two-star general two years earlier, who had been plucked from commanding the Eighth Army in South Korea after less than a year to serve as Hegseth’s top military aide, and whom Trump had nominated to be vice chief of staff the previous October (Associated Press). The AP noted it was the latest of more than a dozen firings of top generals and admirals under Hegseth, following the February 2025 removals that included Adm. Lisa Franchetti, Gen. Jim Slife, and — by Trump — Gen. Charles “CQ” Brown Jr. as chairman of the Joint Chiefs of Staff, plus the earlier departure of George’s deputy, Gen. James Mingus, as vice chief of staff (Associated Press).

The firings came about five weeks into U.S.-Israeli attacks on Iran, with 82nd Airborne Division paratroopers heading to the Middle East and the administration declining to say whether ground troops would be deployed (Associated Press).

Five months later, the civilian leadership turned over as well. On September 3, 2026, Trump announced that Adam Telle, then the Assistant Secretary of the Army for Civil Works, would serve as acting Army Secretary, replacing Dan Driscoll, who had resigned earlier that week after reported tensions with Hegseth (iHeartMedia). According to the Washington Post, Driscoll’s departure followed months of disagreements with Hegseth over the Army’s future direction and the dismissal of several senior officers (iHeartMedia). White House spokeswoman Anna Kelly praised Driscoll’s tenure, crediting his contributions to military operations and international negotiations, particularly between Russia and Ukraine, while Hegseth congratulated Telle as “a great patriot” and “an immediate asset to the U.S. Army” (iHeartMedia).

As September closed, the shakeup was widening from individuals to the structure itself: Hegseth was expected to announce cuts of up to 20 percent in general and admiral positions at his State of the Force address at Marine Corps Base Quantico, doubling the reduction targets set in May 2025 — a move that could affect “hundreds of current and rising military leaders,” according to the Washington Post (The Manila Times).

The Army Transformation Initiative

The restructuring began on April 30, 2025, when Hegseth issued a memorandum titled “Army Transformation and Acquisition Reform,” directing the Army to “implement a comprehensive transformation strategy” and to “overcome parochial interests to rebuild our Army, restore the warrior ethos, and reestablish deterrence” (Congressional Research Service). The next day, Secretary of the Army Dan Driscoll and Chief of Staff Gen. Randy George published a “Letter to the Force: Army Transformation Initiative” — ATI — implementing the strategy (Congressional Research Service).

The directives set hard deadlines for “war winning capabilities”: field long-range missiles capable of striking moving land and maritime targets by 2027; put unmanned systems and ground/air-launched effects in every division by the end of 2026; push counter-drone capabilities down to maneuver platoons by 2026 and companies by 2027; and enable AI-driven command and control at theater, corps, and division headquarters by 2027 (Congressional Research Service). At the same time, the Army was ordered to end procurement of systems described as obsolete and cancel or scale back programs described as ineffective or redundant — including manned attack aircraft, excess ground vehicles, the AH-64D Apache, the HMMWV, the Joint Light Tactical Vehicle, and the Gray Eagle drone — while reducing manned attack helicopter formations and augmenting them with inexpensive drone swarms (Congressional Research Service). The ATI letter added cuts of 1,000 staff positions at Army headquarters, a trimming of general officer billets, the fielding of the M-1E3 tank, and development of the Future Long-Range Assault Aircraft (Congressional Research Service).

The organizational changes were just as dramatic. On October 1, 2025, the U.S. Army Transformation and Training Command (T2COM) was established in Austin, Texas, as a four-star Army command consolidating the Training and Doctrine Command (TRADOC) and Army Futures Command — unifying force generation, force development, and force design under one headquarters, with three three-star subordinate commands: the Futures & Concepts Command for force design, the Combined Arms Command for force development, and the Army Recruiting Command for force generation (Congressional Research Service). On December 5, 2025, the Army activated the U.S. Army Western Hemisphere Command (USAWHC), merging Forces Command, U.S. Army North, and U.S. Army South into a single four-star headquarters focused on homeland defense, with full operational capability targeted for summer 2026 and corps-level units reassigned across theaters — I Corps to U.S. Army Pacific, III Corps to U.S. Army Europe-Africa, and the XVIII Airborne Corps to USAWHC (Congressional Research Service). Unit-level changes followed through the fall of 2025: the 2nd and 4th Security Force Assistance Brigades were deactivated, several Air Cavalry Squadrons were shut down, and eight Infantry Brigade Combat Teams — roughly 4,500 soldiers each — began converting into leaner ~1,900-soldier Mobile Brigade Combat Teams (Congressional Research Service).

Congress has watched warily. In March 2025, the chairs of the Senate and House Armed Services Committees warned they would “not accept significant changes to our warfighting structure” made without coordination with Congress (Congressional Research Service). In June 2025, the House Armed Services chairman told Army leaders the committee had “not received any real information on the Army’s budget request” or “any detailed information on the Army’s Transformation Initiative,” adding: “An overhaul this significant should be based on a thorough assessment of requirements… We need to see those assessments and blueprints” (Congressional Research Service).

The 250th birthday parade

Before the transformation’s hardest edge fell, the Army marked a milestone. On June 14, 2025 — the Army’s 250th birthday, which coincided with President Trump’s 79th — a military parade rolled down Constitution Avenue in Washington, D.C., with 84 military vehicles including 28 Abrams tanks and 6,700 marching soldiers, watched by Trump from a viewing stand near the White House (ABC News). Soldiers marched in uniforms representing America’s biggest armed conflicts from the Revolutionary War to the War on Terror; Trump administered the oath of enlistment to about 250 soldiers during the event, and it closed with fireworks over the Tidal Basin (ABC News). The Army said it had accounted for $25 million to $45 million in spending on the parade, and an AP-NORC poll found about 6 in 10 Americans considered it not a good use of government money (ABC News).

Founded 1775 — older than the nation

“Two hundred forty years ago on June 14, 1775, America’s Army was founded when our nation’s leaders established the Continental Army,” the Army’s own history office writes — making the service older than the United States it defends (U.S. Army). The Congressional Research Service’s history of Army force structure notes five major transformations since 2000 alone — the 2003 modular reorganization for the wars in Iraq and Afghanistan, the 2012 drawdown, the 2017 decisions, the 2018 Aim Point initiative, and the 2024 transformation — before ATI arrived in 2025 (Congressional Research Service). The FY2017 defense authorization set Army end strength at 1.018 million Active and Reserve Component soldiers, a figure the ATI-era Army is now reshaping around leaner, more mobile formations rather than sheer size (Congressional Research Service).

What this profile does not claim

This profile does not state the Army’s exact current end strength — the last total figure verified here is the FY2017 authorized 1.018 million, and the ATI restructuring is changing the force faster than public strength data can track. It does not claim permanent occupants for the Army’s two top jobs: as of September 30, 2026, both the Secretary (Adam Telle) and the Chief of Staff (Gen. Christopher LaNeve) are acting, and it was unclear when permanent nominations would follow. The expected 20 percent cut to general and admiral positions is reported as an expected announcement, not an accomplished fact. Claims about the Iran war’s conduct or the damage to bases are kept to what the cited reports state as context for the leadership decisions, not asserted independently. No claims are made about Army traditions, mascots, marches, or insignia, which were outside the sources fully read for this profile.