Australian Defence Force personnel will join the Norwegian-led Operation Legio - based close to the Ukrainian border - to teach basic infantry tactics, leadership and military skills, Defence Minister Richard Marles said.
Since 2023, Australia has been providing similar support through the UK-based Operation Interflex, but the federal government says it now makes sense to deliver training closer to Ukraine.
"The serving men and women of the Australian Army will continue their crucial work to train the new recruits of the Ukrainian Armed Forces for as long as it takes," Mr Marles told a defence summit on Tuesday night.
"The lessons that will be learned (in Ukraine), good or bad, will be applied here, that is why from the outset we have been supporting the people of Ukraine," he said.
Operation Legio was first established in 2022 in conjunction with a number of European countries.
The ADF has previously trained more than 3650 Ukrainian military personnel in the UK and the federal government given Kyiv more than $1.7 billion to help it in its war against Russia.
Some ADF troops have also previously been based in Poland to help with a deployment of an E-7A Wedgetail - a sophisticated air force surveillance plane - which has provided intelligence and helped Ukraine coordinate battlefield movements.
"Australia is continuing to adapt our contributions to Ukraine to ensure our support remains practical, relevant, and aligned with their most urgent needs," Mr Marles said.