Complex sentence: Amateur Radio operators in Australia participate in the "Remembrance Day Contest" on the weekend nearest Victory in the Pacific Day, 15 August, remembering Amateur Radio operators who died during World War II and to encourage friendly participation and help improve the operating skills of participants.
Split into simpler sentences: Amateur radio operators in Australia participate in the Remembrance Day Contest on the weekend nearest Victory in the Pacific Day, 15 August. The competition commemorates amateur radio operators who died during World War II and encourages friendly participation to help improve the operating skills of participants.