Complex sentence: Wing Commander Upkar Singh was awarded the Ati Vishisht Seva Medal although he was recommended for the Mahavir CHakra by the Air Officer commanding Adampur.
Split into simpler sentences: Wing Commander Upkar Singh was awarded the Ati Vishisht Seva Medal. For this the squardron commander was recommended for Maha Vir Chakra by the Air Officer commanding Adampur.