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                                                                                                January 14, 2020

Defender Europe 20 Military Exercise, Historical (REFORGER)

Exercises, and U.S. Force Posture in Europe


On October 7, 2019, the U.S. Army announced it would
conduct the largest U.S.-based exercise of forces deploying
to Europe in the past 25 years: Defender Europe 20. While
some have compared it to annual Cold War-era
REFORGER military exercises, the Army suggests that
while similar, Defender Europe 20 will be a more complex
exercise than historical REFORGER exercises in terms of
logistics, multinational command and control, and
multidomain operations.



From a military standpoint, in the event of a major conflict
on the European continent, present force levels, including
units in Europe as part of the heel-to-toe rotations, could
prove to be insufficient to defend U.S. and allied interests.
In that scenario, the United States may choose to flow
significant additional forces across the Atlantic, an
undertaking that would be complex under optimal
circumstances, and exponentially more so under conditions
of war, when an adversary might seek to actively prevent
the arrival of U.S. forces and equipment (anti-access/area
denial). Some officials are concerned that the United
States' ability to move equipment in timely fashion, in
particular heavy tanks and fighting vehicles, from U.S.
bases to the ports from which the equipment is shipped
requires additional emphasis. Defender Europe 20 is
intended to exercise and test such expeditionary
deployment capabilities, much as REFORGER did in past
eras.



REFORGER REturn of FORces to GERmany was a
series of North Atlantic Treaty Organization (NATO)
annual military exercises conducted from the late 1960s to
early 1990s to validate the ability of NATO allies to rapidly
deploy forces to Europe to reinforce NATO positions on the
continent and to demonstrate Western commitment to
defend against Warsaw Pact aggression.



While approximately 74,000 U.S. military personnel are
stationed in Europe today, at the height of the Cold War,
more than 400,000 U.S. military personnel were stationed
on the European continent. According to the Center for
Strategic and International Studies (CSIS):
    In the late 1980s, the United States maintained
    approximately  340,000 permanently stationed
    military personnel in Europe to   deter the
    conventional threat that the Soviet Union and
    Warsaw Pact forces posed to West Germany and


    Western Europe. Of that, U.S. Army forces
    represented  approximately   193,000   soldiers
    organized under two corps (each composed of an
    armored division, an infantry division, and an
    armored cavalry brigade) in addition to three
    independent combat brigades and numerous enabler
    and support units. Apart from permanent-stationed
    forces, the  United   States  maintained  large
    stockpiles of prepositioned equipment in Western
    Europe-enough for several divisions and support
    units to allow forces based elsewhere to rapidly
    reinforce the continent in the event of conflict.

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 According to the Government Accountability Office
 (GAO):
    REFORGER'S history can be traced to the 1967
    Tripartite Agreement between the United States, the
    United Kingdom, and the Federal Republic of
    Germany. The agreement allowed the United States
    to bring back to the United States the headquarters
    and two brigades of the 24th Mechanized Infantry
    Division, leaving only one brigade of that division
    in Europe. To compensate for this reduction in
    troop strength, the agreement required that U.S.
    forces returning to the United States be held in a
    high state of readiness to ensure their capability to
    return rapidly to Europe in a crisis. The agreement
    also stipulated that the 24th Mechanized Infantry
    Division return the two U.S.-based brigades
    annually   to  Germany,    draw   prepositioned
    equipment, link up with the forward-deployed
    brigade, and then participate in a field training
    exercise (FTX).

 REFORGER was conducted in three phases:
 (I) Deployment. Tested procedures for receiving,
 equipping, and transporting REFORGER units to assembly
 areas for tactical employment and also evaluated the condition
 of prepositioned equipment.
 (2) REFORGER Follow-On Exercise. Provided combined
 arms training to REFORGER forces and oriented units
 deployed from the United States with the European
 environment, as well as their missions in the defense of
 Europe.
 (3) Redeployment. Cleaned equipment, returned it to
 storage, and redeploy forces back to the United States.

While REFORGER initially enjoyed public support, as the
exercise grew over the years in terms of numbers of troops


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