[1] The game was not billed as a computer version of Squad Leader, though it did bear some similarities in that players commanded roughly company sized forces.
A results screen would show losses in men and equipment, and list possession of objectives, leaving the determination of "victory" to the player.
An Extended Capabilities Disk was sold by Avalon Hill also, adding 56 more US, German and Russian assault guns and tanks to the game, as well as providing Japanese, British and Italian forces, with two additional maps and six more scenarios.
A Second Extended Capabilities Disk also underwent initial development, bringing a campaign layer to the game, increasing the speed of play, and making use of 64K of additional memory (where available).
However, forces were randomly selected for each nationality, and the player could also choose to either attack or defend, providing even more diversity to gameplay.
The computer opponent was actually a form of artificial intelligence; in the words of the designer: "I attempted to create a player that would try to win, not simply fire back.
[3] A overview in the magazine that year of squad-level games approved of the graphics and documentation, and described Under Fire!
Perhaps it could be faster; a few functions lend themselves to being speeded up, and some simple shortcuts could have been taken, but I did not find the time factor a drawback.