What are the release dates for The Battle of the Bulge Tigers in the Snow - 1981 VG

The Battle of the Bulge Tigers in the Snow - 1981 VG was released on:

USA: 1981 (Apple II version)
USA: 1981 (Atari 8-bit version)
USA: 1981 (TRS-80 version)
USA: 1982 (DOS version)