Complex sentence: His grandfather had achieved senior rank in the British Indian Army; his father served on the wartime Merchant Navy and his mother was a former midwifery sister-tutor at Queen Charlotte's Hospital London, before running her own maternity nursing home in Ealing.
Split into simpler sentences: His grandfather had achieved senior rank in the British Indian Army. His father served on the wartime Merchant Navy and his mother, a former midwifery sister-tutor at Queen Charlotte's Hospital London, before running her own maternity nursing home in Ealing.