Once upon a time, an Australian kangaroo commanded a dominant position on some of the world’s fiercest battlefields. Before conjuring up images of warfare, thought, the fields being referenced were actually courts and the competition was for tennis. Simpson was a brand started in Australia in 1937 and was known for its prominent display of a kangaroo logo. It would outfit the Australian Olympic team in 1948 and through Olympic Games in the 1950s. The brand was favored by the Australia Davis Cup team and tennis stars including winners of Grand Slam events such as John Newcombe, Tony Roche and…