The phenomenon is seasonal and depends heavily on clear, cloudless skies.
The primary components of the Winter Line positions included: what is winter line
First, it is crucial to clarify that the "Winter Line" was not a single trench or wall. It was a complex system of three major defensive lines stretching across the width of Italy, from the Tyrrhenian Sea to the Adriatic Sea. The Germans, under Field Marshal Albert Kesselring, built these lines to take advantage of the mountainous spine of Italy. The phenomenon is seasonal and depends heavily on
