New Zealand Empires Strength WWIIOriginal vintage World War Two poster The Empire's Strength Do you know that New Zealand produces six times as much butter to day as during the last war and twice as much cheese: that wool, meat and fruit are also exported in very large quantities. These are the sinews of war featuring an agricultural view of a cattle farm by the notable British painter and poster designer Harold Sandys Williamson (1892 1978) showing black, white and brown cows