1001 Video GamesThe Arcade version of Commando appears in the book 1001 Video Games You Must Play Before You Die by General Editor Tony Mott.
Atari 8-bit prototypeA prototype cartridge from 1989 exists for the Atari 8-bit. It is ported by Sculptured Software and is quite similar to the Atari 7800 version. Although a prototype, it seems to be pretty much complete and playable. Presumably it was cancelled because of the inner competition at Atari between the 7800 console and the revived 8-bit computer line (the XE Gaming System).
Board gameBandai has adapted this video game into a board game, part of its Party Joy series.
Commodore 16, Plus/4 versionsThe official release by Elite for the Commodore 16 is rather simplistic with 4 directional controls, no scrolling, and contains only 5 singlescreen levels. There is also a 48KB Commodore Plus/4 specific (presumably homebrew) version, which is much closer to the Commodore 64 version in terms of gameplay, graphics and sound.
German indexOn June 30, 1988, Commando was put on the infamous German index by the BPjS. For more information about what this means and to see a list of games sharing the same fate, take a look here: BPjS/BPjM indexed games.
German versionThe German Version was called Space Invasion and had all soldiers replaced with white androids. All other graphics are the same. This gives this version of Commando a strange look with all these white androids in contrast to the World War II scenario background graphics.
MusicThe Commodore 64 soundtrack for Commando was written by Rob Hubbard overnight at the offices of Elite Software.
Information also contributed by nudgegoonies, Pseudo_Intellectual and Xoleras