Complex sentence: On commissioning, as was the practice at that time, Manekshaw was first attached to the 2nd Battalion, The Royal Scots, a British battalion, and was later posted to the 4th Battalion, 12th Frontier Force Regiment, commonly known as the 54th Sikhs.
Split into simpler sentences: On commissioning, as was the practice at that time, Manekshaw was first attached to the 2nd Battalion, The Royal Scots, a British battalion. He was later posted to the 4th Battalion, 12th Frontier Force Regiment, commonly known as the 54th Sikhs.