The Wallach brothers were a family of eight boys born to Henry and Mary Wallach of Bondi Beach in Sydney, Australia toward the end of the 19th century. Six of the brothers all saw active service in World War I. The fourth and eighth brothers, Clarrie and Neville were both top-grade rugby union players before the War. They both saw action at Gallipoli, were promoted on the Western Front as Captains, were both recipients of the Military Cross and each fell within a week of each other in France in fighting at the time of the Second Battle of Villers-Bretonneux.