Question: What are the similarities between Bougainville – Our Island Our Fight and The Anderson Platoon documentaries?

Context paragraphs:
Battle of Empress Augusta Bay: The Battle of Empress Augusta Bay, on 1–2 November 1943—also known as the Battle of Gazelle Bay, Operation Cherry Blossom, and in Japanese sources as the Sea Battle off Bougainville Island (ブーゲンビル島沖海戦)—was a naval battle fought near the island of Bougainville in Empress Augusta Bay.  The naval battle was a result of Allied landings on nearby Bougainville in the first action in the Bougainville campaign of World War II and may also be seen as part of the Solomons and New Guinea campaigns.  The battle was significant as part of a broader Allied strategy—known as Operation Cartwheel—aimed at isolating and surrounding the major Imperial base at Rabaul.  The intention was to establish a beachhead on Bougainville, within which an airfield would be built.

Battle of Porton Plantation: The Battle of Porton Plantation (8–10 June 1945) took place near the village of Soraken on Bougainville Island, in the Solomon Islands archipelago during World War II.  Involving forces from Australia, New Zealand and Japan, the battle was part of the wider Bougainville campaign, which had begun in late 1943 and lasted until the end of the war in August 1945.  The battle formed part of Australian efforts to liberate the northern part of Bougainville.

Buin, Papua New Guinea: Buin, a town on Bougainville Island, and the capital of the South Bougainville District, in the Autonomous Region of Bougainville, in eastern Papua New Guinea.  The island is in the northern Solomon Islands Archipelago of the Melanesia region, in the South Pacific Ocean.

Bougainville whistler: The Bougainville whistler ("Pachycephala richardsi") or Bougainville hooded whistler is a species of bird in the family Pachycephalidae.  It is found on Bougainville Island, east of New Guinea.  Its natural habitat is subtropical or tropical moist montane forests.  The Bougainville whistler was split from the Hooded whistler in 2014.

Bougainville – Our Island Our Fight: Bougainville – Our Island Our Fight is a 1998 Australian documentary film.  It was produced and directed by Wayne Coles-Janess.

Bougainville Copper: Bougainville Copper Limited (BCL) is a mining company of Papua New Guinea (PNG) that is listed on the Australian Securities Exchange (ASX).  BCL operated the copper, gold and silver mine at Panguna in central Bougainville (Bougainville Island) in PNG from 1971 to 1989.  Mining operations were officially halted on 15 May 1989, due to militant activity and the mine has remained closed since.

Bougainville Island: Bougainville Island is the main island of the Autonomous Region of Bougainville of Papua New Guinea.  This region is also known as Bougainville Province or the North Solomons.  Its land area is 9,300 km.  The population of the province is 175,160 (2000 census), which includes the adjacent island of Buka and assorted outlying islands including the Carterets.  Mount Balbi at 2,700 m is the highest point.  Although Bougainville Island is geographically part of the Solomon Islands archipelago, it is not a part of the state of Solomon Islands.

Bougainville Strait: Bougainville Strait separates Choiseul Island, part of the Solomon Islands from Bougainville Island, the next to the northward and part of Papua New Guinea.  It was first passed through in 1768 by Louis Antoine de Bougainville, who christened it.  A Lieutenant John Shortland of the Royal Navy sailed through it in 1788, giving the name of Treasury Islands to the numerous islands, lying in the strait.  He named the strait after himself, but it later became known as Bougainville.

The Anderson Platoon: The Anderson Platoon (French: "La Section Anderson" , released in 1966 in Europe, 1967 in the US) is a documentary feature by Pierre Schoendoerffer about the Vietnam War, named after the leader of the platoon - Lieutenant Joseph B. Anderson - with which Schoendeorffer was embedded.  Two decades later, a sequel was released as "Reminiscence".

Louis Antoine de Bougainville: Louis-Antoine, Comte de Bougainville (12 November 1729 – 31 August 1811) was a French admiral and explorer.  A contemporary of the British explorer James Cook, he took part in the Seven Years' War in North America and the American Revolutionary War against Britain.  Bougainville later gained fame for his expeditions, including circumnavigation of the globe in a scientific expedition, the first recorded settlement on the Falkland Islands, and voyages into the Pacific Ocean.  Bougainville Island of Papua New Guinea was named for him.

Supporting paragraphs: Bougainville – Our Island Our Fight The Anderson Platoon
Answer: the Vietnam War