Complex sentence: The way was now clear for the British detachment at Dundee to fall back on Ladysmith but Sir George White feared that yet more Boers were about to fall on Ladysmith, and ordered the force at Elandslaagte to fall back there.
Split into simpler sentences: The way was now clear for the British detachment at Dundee to fall back. Unfortunately, Sir George White feared that yet more Boers were about to fall on Ladysmith, and ordered the force at Elandslaagte to fall back there.