Role in Red Alert 1
Same as Karachi in Pakistan as a large city and harbour positions held there, Da Nang was also a command post used by the Soviet Union during the Great World War II which lead the Soviets take all of the Asian continent. The Allied High Command Headquarters in London, England said that they had no choice to hold the conquest of Europe off by the Soviets but send some of their own forces to Asia for another offensive.
When Allied troops surrendered all around Asia and the USSR spread across the continent, Da Nang is still a command post to the Soviet Union and waited until the Allied defeat is held in England for the USSR to destroy the AHCH (Allied High Command Headquarters) and win victory.
It is unknown if Vietnam became a friend to the Soviet Union during this World War.