Joseph L. Osterman is a retired

United States Marine The United States Marine Corps (USMC), also referred to as the United States Marines or simply the Marines, is the maritime land force service branch of the United States Department of Defense. It is responsible for conducting expeditionary ...

lieutenant general Lieutenant general (Lt Gen, LTG and similar) is a military rank used in many countries. The rank traces its origins to the Middle Ages, where the title of lieutenant general was held by the second-in-command on the battlefield, who was norma ...

who served as the commander of the

I Marine Expeditionary Force The I Marine Expeditionary Force ("I" pronounced "One") is a Marine Air Ground Task Force (MAGTF) of the United States Marine Corps primarily composed of the 1st Marine Division, 3rd Marine Aircraft Wing, and 1st Marine Logistics Group. It i ...

Marine career

Osterman was commissioned in the

United States Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines or simply the Marines, is the maritime land force service branch of the United States Department of Defense. It is responsible for conducting expeditionar ...

as a second lieutenant through the

Naval Reserve Officers Training Corps The Naval Reserve Officer Training Corps (NROTC) program is a college-based, commissioned officer training program of the United States Navy and the United States Marine Corps. Origins A pilot Naval Reserve unit was established in September 1924 ...

at the

University of Colorado The University of Colorado (CU) is a system of public universities in Colorado. It consists of four institutions: the University of Colorado Boulder, the University of Colorado Colorado Springs, the University of Colorado Denver, and the U ...

in 1982. He graduated from

The Basic School The Basic School (TBS) is where all newly commissioned and appointed (for warrant officers) United States Marine Corps officers are taught the basics of being an "Officer of Marines." The Basic School is located in Stafford County, Virginia to ...

and the Infantry Officers Course, then received assignment as rifle platoon commander and 81 mm mortar platoon commander with the

1st Battalion, 7th Marines The 1st Battalion, 7th Marines (1/7) is an infantry battalion of the 7th Marine Regiment of the United States Marine Corps. It is currently based at the Marine Corps Air Ground Combat Center Twentynine Palms. Consisting of approximately 1,000 ...

. He then served as executive officer of the Marine Detachment aboard , then as commanding officer of the

Marine Detachment A Marine Detachment, or MarDet, was a unit of United States Marines permanently embarked on large warships including cruisers, battleships, and aircraft carriers, typically consisting of anywhere 35 and 85 men. They were a regular component of a s ...

aboard the . He served as an operations officer with the

1st Battalion, 2nd Marines 1st Battalion, 2nd Marines (1/2) (pronounced "one-two") is an infantry battalion in the United States Marine Corps based out of Marine Corps Base Camp Lejeune, North Carolina, consisting of approximately 900 Marines and sailors. The battalion, ca ...

. As a lieutenant colonel, Osterman was the commanding officer of the

1st Battalion, 3rd Marines The 3d Littoral Combat Team (formerly 1st Battalion, 3d Marines) is an infantry unit in the United States Marine Corps based out of Marine Corps Base Hawaii. Nicknamed the "Lava Dogs", the unit consists of approximately 800 Marines and sailors a ...

and participated in support of

Operation Enduring Freedom Operation Enduring Freedom (OEF) was the official name used by the U.S. government for both the first stage (2001–2014) of the War in Afghanistan (2001–2021) and the larger-scale Global War on Terrorism. On 7 October 2001, in response ...

. This was followed by a joint tour as an instructor and as the chief of staff, NATO School, Oberammergau, Germany, where he was responsible for training support to some 54 nations. Following his promotion to

colonel Colonel ( ; abbreviated as Col., Col, or COL) is a senior military Officer (armed forces), officer rank used in many countries. It is also used in some police forces and paramilitary organizations. In the 17th, 18th, and 19th centuries, a colon ...

, Osterman assumed command of the

25th Marine Regiment The 25th Marine Regiment (25th Marines) is one of two infantry regiments in the 4th Marine Division of the United States Marine Corps. From its headquarters in Fort Devens, Massachusetts, the regiment commands fifteen training centers in nine sta ...

in 2004 and deployed to Iraq as an adviser to the Iraqi army. In June 2006 Osterman became director of the Expeditionary Warfare School, which was followed in 2008 by assignment as assistant division commander,

2nd Marine Division The 2nd Marine Division (2nd MARDIV) is a division of the United States Marine Corps, which forms the ground combat element of the II Marine Expeditionary Force (II MEF). The division is based at Marine Corps Base Camp Lejeune, North Carolina a ...

. In March 2010, he deployed to Afghanistan as commanding general,

1st Marine Division The 1st Marine Division (1st MARDIV) is a Marine (military), Marine Division (military), division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California. It is the ground combat element of the I Marine E ...

. Osterman's joint assignments include the International Security Assistance Force Joint Command Deputy Chief of Staff of Operations, Afghanistan, and as Instructor and Chief of Staff at the NATO School, Oberammergau, Germany. As a brigadier general, Osterman served as commanding general of the Marine Corps Recruiting Command from 2011 to 2012. As a major general, Osterman assumed command of Marine Corps Forces Special Operations Command in August 2014 to August 2016. Upon promotion to

, Osterman served as Deputy Commander of the

United States Special Operations Command The United States Special Operations Command (USSOCOM or SOCOM) is the unified combatant command charged with overseeing the various special operations component commands of the Army, Marine Corps, Navy, and Air Force of the United States A ...

, MacDill Air Force Base, Florida. Osterman's final assignment before retirement was Commanding General,

from July 2018 to 31 July 2020.

Post-retirement

In June 2022, Osterman was among five senior Marine and Navy officers who were censured by

Secretary of the Navy The Secretary of the Navy (SECNAV) is a statutory officer () and the head (chief executive officer) of the Department of the Navy, a military department within the United States Department of Defense. On March 25, 2025, John Phelan was confirm ...

Carlos Del Toro Carlos Del Toro (born 1961) is a Cuban-American entrepreneur and retired United States Navy officer who served as the 78th United States secretary of the Navy from 2021 to 2025. He is the second Hispanic American to serve as the Secretary of the ...

for failing to prevent the July 2020 AAV sinking incident that killed eight marines and one navy sailor.

Awards and decorations

References

{{DEFAULTSORT:Osterman, Joseph 1960 births United States Marine Corps personnel of the Gulf War United States Marine Corps personnel of the Iraq War United States Marine Corps personnel of the War in Afghanistan (2001–2021) Living people People from Anne Arundel County, Maryland Recipients of the Defense Distinguished Service Medal Recipients of the Defense Superior Service Medal Recipients of the Legion of Merit