Nickforce was a formation used in the latter stages of a Battle that was a battle of what?
Nickforce:  It was hastily formed from elements of the British 6th Armoured Division on 14 February 1943, for the defence of Thala, during the latter stages of the Battle of Kasserine Pass. Battle of Kasserine Pass: The Battle of Kasserine Pass was a battle of the Tunisia Campaign of World War II that took place in February 1943.
Tunisia Campaign of World War II