With 6 gold, 3 silver and 2 bronze medals he is the most successful Australian Paralympic athlete in the Winter Games.

His left leg was amputated above the knee when he was nine years old due an osteogenic sarcoma (bone cancer).

Following surgery, chemotherapy and radiotherapy, Milton was selected in the Australian team to compete as a cyclist at the 2008 Beijing Paralympic Games.

[4] In January 1996, he won a gold, silver and bronze medal at the World Skiing Championships held in Austria.

He then aimed to beat the Australian open record of 212.26 km/h, set in 1997 by able-bodied athlete Nick Kirshner.

[9] At the 2006 Turin Winter Paralympics, he won a silver medal in the men's Downhill standing event.

[10] At the 2014 Sochi Games, he was the assistant alpine skiing coach of the Australian Paralympic Team.