Complex sentence: The New Zealanders, under bombardment from both flanks, retired north-east along the New Zealand Division axis towards Zaafran, which was east of Belhamed and slightly further north-east of Sidi Rezegh.
Split into simpler sentences: The New Zealanders, under bombardment from both flanks, retired along the New Zealand Division axis, north-east towards Zaafran. The remnants of the division concentrated near Zaafran, which was east of Belhamed, slightly further north-east of Sidi Rezegh.