Queensland State Archives posted a photo:
During the First World War, Fort Lytton was mainly a training facility for troops preparing to go overseas. Also, Fort Lytton had its own wharf where numerous troops embarked. The Fort’s artillery was used operationally on two occasions, firing warning shots near two ships (a Dutch steamer and a local fishing vessel) that were failing to follow wartime procedures. Immediately following the war, the Fort was used as an extension of the adjacent quarantine station by accommodating quarantined returning soldiers in tents.
Description source:
Wikipedia
View the original record at the Queensland State Archives:
Item ID 2692229