About | HeinOnline Law Journal Library | HeinOnline Law Journal Library | HeinOnline



1 [1] (June 30, 2026)

handle is hein.crs/goveurq0001 and id is 1 raw text is: 







                                                                                          U

Defense Primer: U.S. European Command (EUCOM)


U.S. European Command  (USEUCOM, commonly referred
to as EUCOM)  is 1 of 11 combatant commands (CCMDs)
within the Department of Defense (DOD, which is using a
secondary Department of War designation, under
Executive Order 14347 dated September 5, 2025). EUCOM
was established in 1947 and is responsible for the
command  and control of U.S. military forces in Europe.

Organization
EUCOM is   led by a four-star general or admiral. The
Senate confirmed the current EUCOM commander,  U.S.
Air Force General Alexus Grynkewich, in June 2025. Since
1950, the North Atlantic Council (the primary
decisionmaking body within the North Atlantic Treaty
Organization, or NATO) has asked the U.S. President to
nominate an American officer to serve as the alliance's
military commander, Supreme Allied Commander Europe
(SACEUR),  though no formal council resolution or treaty
requires the council to do so. The EUCOM commander,
therefore, has traditionally had dual-hatted responsibilities
(i.e., simultaneously overseen EUCOM and NATO's
military operations).

All five DOD armed services, as well as U.S. Special
Operations Command,  provide forces to EUCOM.
According to DOD, as of March 2026, there were more
than 86,000 DOD personnel in Europe.

Mission   and   Strategc Context
According to EUCOM,  the command's  mission is to deter
conflict, maintain peace and security, and provide strategic
depth through military operations, exercises and security
cooperation with NATO allies and partners. In March
2026 testimony, General Grynkewich stated that EUCOM
has prioritized three mission areas: 1) Protect the U.S.
Homeland;  2) Project U.S. Combat Power; and 3) Position
the Alliance to Deter and Defend.

The second Trump Administration signaled a shift in U.S.
strategy in Europe in its 2025 National Security Strategy
(NSS) and 2026 National Defense Strategy (NDS). While
the 2022 NDS characterized Russia as an acute threat to
the United States and European allies, the 2026 NDS
described it as a persistent but manageable threat to
NATO's  eastern members. The 2026 NDS  called for allies
to take primary responsibility for Europe's conventional
defense, with critical but more limited U.S. support.

Since 2014, following Russia's invasion and occupation of
Ukrainian territory including Crimea, EUCOM has focused
on deterring Russia and providing assistance to Ukraine. In
2022, following Russia's full-scale invasion of Ukraine,
EUCOM established  the Security Assistance Group-
Ukraine to support long-term coordination of training and
equipping the armed forces of Ukraine. General


pdated June 30, 2026


Grynkewich  has highlighted EUCOM's innovation efforts,
describing the European theater as a laboratory to test
new equipment and tactics, with lessons learned from the
war in Ukraine spanning all domains. The 2025 NSS
indicated that negotiating an expeditious cessation of
hostilities in Ukraine was a core [U.S.] interest, in part
to reestablish strategic stability with Russia.

Area   of  Responsibility
The EUCOM area   of responsibility (AOR) encompasses
53 sovereign nations and city states. This AOR has
changed over time, including in 2008, when the newly
established U.S. Africa Command (AFRICOM)  took
responsibility for overseeing U.S. military activities on the
African continent; in 2021, when DOD shifted Israel to
U.S. Central Command's AOR;  and, in June 2025, when
DOD   shifted Greenland to the U.S. Northern Command
(NORTHCOM) AOR.

U.S. military presence in Europe involves permanent and
rotational forces. EUCOM's AOR includes 30 overseas
bases that DOD has consistently used for at least 15 years
and at which the U.S. military exercises some degree of
operational control; there are also 19 other military sites
across EUCOM's  AOR   that the U.S. military has used or to
which it has access (see Figure 1). The majority of DOD
personnel in EUCOM  are stationed in Germany, Italy, and
the United Kingdom. EUCOM   is headquartered in
Stuttgart, Germany.


Source: CRS analysis of unclassified U.S. government
documentation, updated June 17, 2025. For more information about
EUCOM  and the methodology used to develop this map, see CRS
Report R48123, U.S. Overseas Basing: Background and Issues for
Congress.
Notes: Some dots may reflect more than one base or site. This map
may not show all facilities where the United States has an access
agreement with host nations within the selected geographic range.