 The phrase ""Lützendimma"" (Lützen fog) is still used in the Swedish language in order to describe particularly heavy fog.Two days before the battle, on 14 November (in the Gregorian calendar, 4th in the Julian calendar) the Roman Catholic general Albrecht von Wallenstein decided to split his men and withdraw his main headquarters back towards Leipzig.He expected no further move that year from the Swedish army, since unseasonably wintry weather was making it difficult to camp in the open countryside.