In their Quiet fields is a game of America's bloodiest single day. It is meant to be played by two or more players. It is hoped that the game accurately portrays the desperate struggle that occurred on September 17, 1862 between the Armies of the Potomac and of Northern Virginia. At odds of 1:2 or worse, Lee's Army of Northern Virginia was narrowly able to avert disaster. This game shows that victory is within the grasp of both armies and that final victory may not be decided until the very end.

Errata/variant counters found on Gamer's Xmas 1992 countersheet : http://www.gamersarchive.net/theGamers/archive/xmas.htm.

This game was re-released with revised rules and different artwork as In their Quiet Fields II in 1995.