Ok the Makeup of the Aurora Islands was based on the Pacific Island chains and saw heavy fighting during WW2. For Aurora Island there isn't much that suggests and shows that Aurora fortifications and everything were around during WW2. My suggestion is integrate assets from Far Cry 3 including the old Soviet PT Boats and Japanese minesweepers and more things like crashed airplanes with the Japanese insignia and American Crashed plane with the US Army insignia. About A month back was talking about some possible weapons the MG-42 AKA : The Linoleum Ripper and the Mauser 1898 Service Rifle. These were given to the the Soviets as post war Reperations along with some vehicles and equipment and then were retrofitted and modified to serve the Soviets during the Cold War. The cache included a platoon of King Tiger Tanks, Trucks some Flak 88s, weapons and ammo and other general equipment. Aurora has zero indications of WW2 and to fit the lore of the Time period needs more WW2 lore to go along with the Cold War lore. A suggestion is the Island Shrouded in Clouds could be an old Japanese Imperial Submarine and Naval Base and Headquarters that was captured by the US Army and was used as a repair depot and maintenance bay for aircraft and tanks and vehicles and boats. The DSHK Heavy Machine Gun Aka the Sweety was and stil is used in the Soviet army is the mg featured in both Far Cry 3 and Far Cry 4 and The Metro Franchise. And After the Americans pulled outof the Pacific Theatre after the war, The Soviets took over the island and repaired and retrofitted everything for the long service of the Cold War some almost 50 years and then in 1991 when the Soviet Union Collapsed The Soviets just Abandoned Aurora leaving behind their equipment and Weapons and Vehicles. And maybe a few Soviet letters mentioning Chernobyl and some letters dated April 26, 1986 and even documents and letters from the Kremlin recalling All Soviet Soldiers and Equipment back to Russia. The Kremlin left a small Token Force behind that would continue to serve and Maintain Aurora until 5 years later when the USSR collapsed and the Berlin Wall came Crumbling Down and even letters from family members of the Soviet soldiers that were permanently stuck on Aurora and Forgotten about. A few letters from home mentions the Berlin wall crumbling down and the borders opened again.