Man, they totally went bananas with Western names for this Men of War series.
In Russia, there is the first game, "В тылу врага" (which has several Russia-only expansions) and its sequel "В тылу врага 2". The sequel also has three expansions, which are called "В тылу врага 2: Братья по оружию", "В тылу врага 2: Лис пустыни" and "В тылу врага 2: Штурм". There is also a stand-alone expansion which drops the series name and is simply called "Чёрные бушлаты". The amount of expansions is a bit confusing, but at least you can tell what came first and that the games are actually related.
Let's take a look at the English names of the same games now. "В тылу врага" (which means literally "behind enemy lines", by the way) = Soldiers: Heroes of World War II. "В тылу врага 2" = "Faces of War. "В тылу врага 2: Лис пустыни" = "Men of War". "Чёрные бушлаты" = "Men of War: Red Tide". "В тылу врага 2: Штурм" = "Men of War: Assault Squad". The other remaining expansion seemingly didn't get an English release.
Bloody confusing! It's like they don't have a concept of a brand over there at 1C. Of course, I suppose it's all because of some sort of legal/copyright issues, but that happens way too often with their franchises (the "Sea Dogs"/"Корсары" series is probably the most prominent other example).