It also described how a prisoner was stripped naked, shot and hung on a barbed wire fence for several months as a deterrent to breaking the camp's rules.
"My father was a very fit man before he left for the war. He used to play rugby for Otago.
"He was in a really bad way when he came home.
"He was 14 stone (92kg) when he went to war and he was 6 stone (41kg) when he got out.
"Dad used to say he could hang his hat on his collar bone."
Given that returned servicemen numbers were dwindling, leaving few to tell their stories of horror and survival to future generations, Miss Pollock believed diaries like her father's might help to bridge the gap and continue the dissemination of information.
She believed Anzac Day was an appropriate time to urge families with similar artefacts gathering dust at home to take them to libraries such as the Hocken Library in Dunedin, where they could be preserved and made available to the public rather than be destroyed or lost.
Miss Pollock discovered her father's diary after he died in 1989. It was among old POW magazines and newspaper clippings in an old wardrobe, and she believed other families may have similar artefacts.
"I thought 'what's going to happen to all dad's stuff once I go?' It would be such a shame to lose it. I want people to know what happened and what these men went through."
She plans to give the artefacts to the Hocken Library in the hope they will be preserved for future generations to explore.
"It's so important for the young people today to know about what happened and why so many men lost their lives," she said.
"Without this information they won't get the vivid pictures like the ones we have been lucky to get."
Hocken Library archives curator Anna Blackman welcomed any Dunedin or Otago-related material, and said library staff would provide advice about other places artefacts could be sent to.