can you name anyone warrior or commander who belonged to the third country's force mentioned previously who fought in that battle?
Lieutenant General Shigeru Katagiri .
Background
Lieutenant General Shigeru Katagiri, the commander of the Japanese 20th Division, ordered the 80th Infantry Regiment to hold the Wareo area to protect the withdrawal of the 79th Infantry Regiment and other units. 
in which country did the battle of sio take place? Papua New Guinea. on what date did this fight begin? December 1943. whom was it fought between? Australian and Papuan forces , and the Japanese. what were the causes which led to this clash? To remove the Japanese control over the region. what weapons were used to fight in this? Artillery guns and tanks. can you name anyone warrior or commander who belonged to the first force mentioned previously who fought in this? Lieutenant General Frank Berryman. what's the above person's date of birth? 11 April 1894. which place was he born? Geelong, Victoria. can you name a few countries in which he landed to participate in battles? Egypt and France. can you name anyone warrior or commander who belonged to the second country's force mentioned previously who fought in sio? UNANSWERABLE
Lieutenant General Shigeru Katagiri UNANSWERABLE UNANSWERABLE
Battle of Sio
Background
Although beaten, the Japanese did not leave the area. Lieutenant General Shigeru Katagiri, the commander of the Japanese 20th Division, ordered the 80th Infantry Regiment to hold the Wareo area to protect the withdrawal of the 79th Infantry Regiment and other units. 
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Battle of Sio [SEP] Background
The 2nd Battalion, 238th Infantry Regiment was to act as a rearguard on the coast. Lieutenant General Frank Berryman, the commander of Australian II Corps, now urged Wootten to commence a coastal advance to cut the Japanese supply lines and force Adachi to retreat from the Huon Peninsula if he were not already doing so. Wootten took a more cautious approach. The Battle of Wareo proved that the Japanese intended to defend the area. After a fierce fight, Wootten managed to drive the Japanese from the high ground around Sattelberg and Gusika. In early December, Adachi ordered all his troops to withdraw to Sio.