What is reforger?

Some articles on reforger:

Exercise Reforger
... Exercise Reforger (from return of forces to Germany) was an annual exercise conducted, during the Cold War, by NATO ... The Reforger exercise itself was first conceived in 1967 ... Reforger 1975 marked the operational presence of the United States Marine Corps in Europe for the first time since World War I when the 2nd Marine ...
Exercise Reforger - REFORGER Exercises
... Name Start Date Major Units Reforger I JAN 1969 (Germany based unit) USAREUR (U.S ... Reforger II OCT 1970 (Germany based unit) USAREUR (U.S ... based unit) 1st Infantry Division (Mech) Reforger III OCT 1971 (Germany based unit) USAREUR (U.S ...