Complex sentence: Information from captured Austrian soldiers allowed Frederick to determine the exact location of Neipperg's forces and position at Mollwitz, while the morning fog and snow allowed Frederick's army to advance undetected all the way to within 2000 paces of Neipperg's army camp.
Split into simpler sentences: Information from captured Austrian soldiers allowed Frederick to determine the exact location of Neipperg's forces and position at Mollwitz. The morning fog and snow allowed Frederick's army to advance undetected all the way to within 2000 paces of Neipperg's army camp.