3/4. As Sunday's anniversary of D-Day approaches,
Huw Edwards recalls the final build-up to the event in 1944 live from Southwick House in Portsmouth, where the crucial decision to invade France was made. With Rageh Omaar , Hazel Irvine,
Helen Willetts , Juliet Gardiner and Dr Simon Trew. BBCi: interactive options for digital viewers Beating the Retreat, with live coverage from Southsea of the veterans' march Past, is at 4.10pm on BBC2
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