Call of Duty: United Offensive is an expansion pack for the first-person shooter video game Call of Duty. It was developed by Gray Matter Studios, [5] with contributions from Pi Studios, and published by Activision. It was released for Microsoft Windows on September 14, 2004, and for Mac OS X on November 22, 2004.

《使命召唤：联合进攻》（Call of Duty: United Offensive）是一款由Gray Matter Interactive开发，动视发行的第一人称射击游戏，是2003年游戏《使命召唤》的第一部资料片，于2004年9月14日发行。

2004年9月15日 · Take the role of American, British, and Russian soldiers in some of the most climactic battles of World War II, including the Battle of the Bulge, the invasion of Sicily, and the Battle of Kursk. Fight in tanks, jeeps, motorcycles, even a bomber.

使命召唤联合进攻是由动视发行的一款第一人称射击游戏，这款游戏于2004年9月14日北美发行，在游戏中玩家将会扮演美国、英国和苏联三国的士兵完成各种危险的任务。 使命召唤联合进攻这款游戏可以通过修改配置问了来调整游戏的分辨率，玩家在游戏的目录就可以找到这款游戏的配置文件，打开后修改对应的地方就可以调整分辨率。 在使命召唤联合进攻这款游戏中玩家可以输入秘籍获得各种效果，有上帝模式，穿墙，生命值全满，弹药全满等等各种效果，想要使用秘籍需 …

This content requires a game (sold separately). Award-winning developer Gray Matter Interactive follows up on the success of Infinity Ward’s Call of Duty® - winner of over 80 Game of the Year and 50 Editors’ Choice awards worldwide - with Call of Duty®: United Offensive®.

2016年9月15日 · The war that changed the world rages on, with 13 all-new single-player missions, 11 new multiplayer maps, and more intense action than ever before.

2014年3月26日 · Call of Duty: United Offensive is an action game that will take you back to World War II. Players will get to experience being part of the American, British, and Russian forces as they brave some of the iconic battles in history. Experience what it is like to be at the front lines during the Battle of the Bulge or during the Battle of Kursk.

《United Offensive》保留了原来的游戏结构，玩家将会扮演美国、英国和苏联三国的士兵，完成10项以上的任务。 开始时，玩家将会作为苏联军队的一员，参加二战最大的坦克大战－－库尔斯克战役。

2004年9月28日 · There are 13 new single-player levels, plus an enhanced multiplayer experience with 11 new maps and 3 new modes of play, also including vehicles. You are again looking through the eyes of American, British and Russian soldiers. As a US soldier in the 101st Airborne you are in the Battle of the Bulge.

Call of Duty: United Offensive is exclusive to the PC. The game features single-player missions centered around the three major Allied forces of World War II: the United States as Cpl. Scott Riley, the United Kingdom as Sgt. James Doyle, and the Soviet Union as Pvt. Yuri Petrenko.