This year marks the 80th anniversary of the Ardennes Offensive, aka the Battle of the Bulge, fought in the winter of 1944-45. The many wargames recreating this battle include:
The Battle of the Bulge by Avalon Hill, 1965 -- The designers credited General McAuliffe with authenticating their research, while AH's advertising also mentions inspiration from the Henry Fonda film of the same year
The Battle of the Bulge, 2nd edition by Avalon Hill in 1981 with Rodger MacGowan box art depicting General Patton
The Ardennes Offensive by SPI, 1973, designed by Jim Dunnigan
Wacht am Rhein, SPI, 1977, a grand tactical simulation across 4 map boards, larger and more complex than SPI's other Bulge games
The Big Red One, SPI, 1980, a simpler approach to the same subject with shorter rules, fewer pieces, and a small map, originally released in 1979 as Bulge: The Battle for the Ardennes, then rebranded as a tie-in with Samuel Fuller's 1980 film
One Page Bulge by Steve Jackson Games, 1980, one of their few historical microgames, with Dave Martin box art
Attack in the Ardennes, GDW, 1982, designed by Frank Chadwick with box art by William H Keith, Jr