Many soldiers travelled to Vietnam on Qantas charter airlines, which stopped for refuelling in either Hong Kong or Singapore. Because these countries were neutral, Australia had an agreement with their governments that our soldiers would not wear full uniform while there. So, soldiers were issued with multi-coloured 100% cotton shirts to be worn during the stopovers. This shirt was worn by National Serviceman Donald J Duffus, a Sapper in 17th Construction Squadron, June 1969 until June 1970.Multi coloured 100% cotton shirt with tropical pattern, commonly known as a Hawaiian shirt.shirt, don's shirt, vietnam, singapore, don duffus, 3794467, hawaiian shirt, uniform