What is the primary purpose of an Observing Post (OP)?

What is the primary purpose of an Observing Post (OP)?

مشاہدہ کرنے والی پوسٹ (او پی) کا بنیادی مقصد کیا ہے؟
Explanation

An OP is established to monitor enemy movement from a safe distance.

It provides timely intelligence and early warning to the main force.