Mr Midwood served with Te Arawa war hero Lance Sergeant Haane Manahi and was the Maori Battalion's sole survivor of the Takrouna Ridge, North Africa, battle.
After the battle he helped ferry other soldiers away.
In Africa, he was in a slip trench with two comrades when a grenade landed in the back and exploded, killing the two comrades, with no injuries to him despite him sitting between the two men who were killed.
"He was also wounded in Crete, his body still had the remnants of shrapnel."
Mr Treanor said he spoke particularly of Crete and the arduous battles to get away from the advancing Germans.
Opera in the Pa chairman Trevor Maxwell said he was saddened to hear Mr Midwood had passed away.
"With a heavy heart I say farewell - he was a humble, lovely man."
Mr Maxwell said he had heard Mr Midwood was not well enough to attend Saturday night's Opera in the Pa.
"It's really sad, he was a really wonderful man."
Mr Midwood has spoken to the media in the past of his experiences, saying he did not like war "at all", but that the outcome was worth it.
Mr Midwood's tangi is being held at Tunohopu Marae, Ohinemutu. His funeral service will be held at the marae on Wednesday at 11am.