They control or endure a complex of barbed-wire compounds that hold - in strict separation - Koreans, Taiwanese, Japanese and Italians. The last are increasingly tractable, especially after Mussolini falls. The second-to-last are marked by profound unease and incipient rebellion.
Like most of Keneally's narratives, the novel begins carefully rather than speedily. Physical and psychological landscapes are set out. Characters populate them.
Events shape, then start to surge.
We get the edgy manoeuvrings between regular soldiers and "citizen warriors". The confused existence of Japanese POWs filling their time with tiny acts of sabotage (breaking toothbrushes, wearing out safety razors on concrete walls), reconciled to being shot by the garrison when Japan invades the Australian mainland, as it surely will. The volatile factions among Italians, who come to blows over songs.
Misunderstandings multiply. Intentions harden or disintegrate. Events accelerate towards a sustained and shocking sequence as howling Japanese prisoners attack the perimeter, hurling themselves on to barbed wire as ladders for their comrades; pausing to slit the throats of fallen friends as etiquette demands; charging machine guns with cudgels and knives made from tin lids, begging to be killed if they're wounded.
The writing is meticulous and utterly unshowy. The slumbrous, dour rhythms of country life and the mordant Aussie patois are just right. Individual relationships, homicidal or homely, counterpoint the public moments of tumult and fanaticism. It's a story that gathers momentum like a landslide.
And, as usual with Keneally, it's rich with meditations on human failings and yearnings.
Shame and the Captives by Tom Keneally (Vintage $39.99)