Question: Broken Sun is partly based on what attempted escape from a POW camp?

Context paragraphs:
Camp Albuquerque: Camp Albuquerque was an American World War II POW camp in Albuquerque, New Mexico that housed Italian and German prisoners of war.  From this branch camp, the POWs did mostly farm labor, from 1943 to 1946.  Most of these POWs were transferred from Camp Roswell, which was a base or main POW camp for New Mexico.  Camp Lordsburg, New Mexico, and Camp El Paso, Texas, were also base camps.

Broken Sun: Broken Sun is a 2008 Australian film set in the 1940s about a World War I veteran who meets an escaped Japanese POW.  The story is partly based on the Cowra breakout of 1944.  The film was the debut feature from Brad Haynes.

Monteith POW camp: The POW Camp 23, Monteith was a Canadian-run POW camp during World War II, located in Monteith, Iroquois Falls, Ontario.

Argyle Street Camp: Argyle Street Camp was a Japanese World War II Prisoner-of-war camp in Kowloon, Hong Kong, which primarily held officer prisoners.  Built by the Hong Kong government as a refugee camp before the war as North Point POW Camp, it began life as a POW camp soon after Kowloon and the New Territories were abandoned to the Japanese.

Angler POW escape: In April 1941, inmates at the Angler POW Camp near Neys Provincial Park on the north shore of Lake Superior planned the largest escape from a Canadian POW camp during World War II.  The escape was the largest of its kind in Ontario, Canada.

Cowra breakout: The Cowra breakout occurred on 5 August 1944, when at least 1,104 Japanese prisoners of war attempted to escape from a prisoner of war camp near Cowra, in New South Wales, Australia.  It was the largest prison escape of World War II, as well as one of the bloodiest.  During the escape and ensuing manhunt, four Australian soldiers and 231 Japanese soldiers were killed.  The remaining escapees were captured and imprisoned.

Bowmanville POW camp: The Bowmanville POW camp also known as "Camp 30" was a Canadian-run POW camp for German soldiers during World War II located in the community of Bowmanville, Ontario in Clarington, Ontario, Canada (2020 Lambs Road).  In September 2013, the camp was designated a National Historic Site of Canada.

Moorook West Wood Camp: Moorook West (Wood Camp) was a short lived World War II prisoner of war camp in the Australian state of South Australia, located in Loveday near the River Murray, in the state's Riverland.  It was officially part of the Loveday POW Camp complex, and housed Japanese prisoners of war.  They were employed as wood cutters for the Allied war effort.  It was similar to wood camps throughout South Australia at the time, including two others attached to the Loveday POW camps - Woolenook (Wood Camp) and Katarapko (Wood Camp).  The camp was officially closed on 21 February 1943.

Dunham Massey POW Camp: Dunham Massey POW Camp was a POW camp detaining German prisoners of war.

Per Bergsland: Sgt Per Bergsland (17 January 1918 – 9 June 1992) was a Norwegian POW in the German POW camp Stalag Luft III and one of only three men to escape to freedom in the "Great Escape".

Supporting paragraphs: Broken Sun Cowra breakout
Answer: Cowra breakout