The Battleground series of games was developed and published by Talonsoft between 1995 and 1999.
The series consists of nine games:
Battleground 9: Chickamauga (1999)
Battleground 8: Prelude to Waterloo (1997)
Battleground 7: Bull Run (1997)
Battleground 6: Napoleon In Russia (1997)
Battleground 5: Antietam (1996)
Battleground 4: Shilo (1996)
Battleground 3: Waterloo (1996)
Battleground 2: Gettysburg (1995)
Battleground 1: Ardennes/Bulge (1995) (the only 20th century title)
A tenth title, Age of Sail (1996), is sometimes grouped with the series.
Two 4-game Battleground compilations were released in 1998.
The first, Battleground Collection 1, included the three Napoleonic titles and Age of Sail.
The second, Battleground Collection 2, included four of the Civil War titles, the exclusion being Chickamauga, which wasn't released until 1999.
Ardennes/Bulge was not included in either compilation.