The plan was for the Red Army to the west of the line to be defeated in a quick military campaign in 1941 before the onset of winter.[5] The German Wehrmacht assumed that the majority of the Soviet military supplies and the main part of the food and population potential of the Soviet Union existed in the lands that lay to the west of the proposed A-A line.[5] If the line were reached, the Soviet Union would also be deprived of around 86% of its petroleum assets (oil territories in the Caucasus).