Genesis (Book 2 of the story of The Cavalry)

" A small mid-western town in America: Raccoon City.
A solitary island far off in the sea: Rock Fort Island.
An island that would become the second Raccoon City: Sheena Island.
There are still many unanswered questions about these seemingly unrelated and yet intensely traumatic events.
Though it is believed that the international enterprise, Umbrella was somehow involved, little is known as to the origin of this faceless corporation.
When was it established?
By whom?
And how was the T-Virus created?
To uncover the truth, we must delve deeper into the events which transpired in the beginning before the mansion incident. "
This story isn't about the Cavalry, but it has a part in the legend of the Cavalry.