In the movie, many police are shot during the Glenrowan shootout. In real life, the only police casualty was Superintendent Francis Hare, who received a slight wound to his wrist.
The bank that is robbed has "State Savings Bank" on the windows. Before federation in 1901, Australian states were officially independent colonies within the British Empire (ex. Colony of New South Wales). The bank in question was Bank of New South Wales, in Jerilderie, NSW. That name would have been on the windows.
In the movie, everyone in Kelly's gang wears front and rear armor. In real life, only Kelly had front and back plates; the others had only front plates.
Glenrowan Railway Station has worn timber and faded paint. The railway was built in 1873, so the station would be 7 years old at most.