'Whipcord' was a British unrealised plan for an invasion of Sicily following a successful conclusion of 'Crusader' (i) and 'Acrobat' (autumn 1941/spring 1942).
The plan was reliant on the transfer from the UK of four divisions (one armoured and three infantry), which would be replaced by one US corps and one armoured division so that the defence of the UK would not be jeopardised. The British commanders-in-chief in the Middle East felt that the forces would be more sensibly employed for the defence of the region between the Nile river and the Persian Gulf, and the concept was therefore abandoned.