Jack Rodger Marvelly drunkenly scrawled multiple swastikas and slogans, which also included "white life", prominently on his body in permanent marker on the evening of February 24.
He then sat outside the Centenary of Anzac Reserve in northern Sydney before the hate symbols were reported to police.
When arrested, the 31-year-old told police he was "sick of white man genocide globally".
But his lawyer told a court on Wednesday Marvelly was not malicious and did not hold Nazi views.
He was instead a "lost" man with alcohol issues.
"He was feeling extremely low at that point in his life which led to this unfortunate act," Jennifer Mouhaweg told Parramatta Local Court.
She maintained Marvelly "deeply regrets" the unacceptable "one-off act" which has no place in this community.
Magistrate Kate Thompson said Marvelly's antics were disrespectful to the soldiers who died fighting the Nazis in World War II and the families they left behind.
She emphasised the need to denounce the hate crime and deter others from committing similar offending, dismissing any suggestion it was trivial.
The offence involved a degree of planning to prepare and display the five symbols, she found.
But Marvelly has shown genuine remorse and taken strong steps to address his issues with alcohol, she said.
Despite Marvelly's push to be spared a conviction, he was convicted and sentenced to a nine-month community corrections order.
He will be required to comply with drug, alcohol and mental health treatment during that time.
Marvelly hung his head and did not answer questions as he walked out of the courthouse.
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