On March 2, 0087, the AEUG received information that the Titans were developing a new mobile suit, the Gundam Mk-II, in parallel with turning Green Oasis into a military base.
Based on this, three Rick Dias mobile suits were dispatched to Side 7's residential colony, Green Noah 1.
Among the pilots was Char Aznable, who had at the time changed his name to Quattro Bajeena.
Char attempted to infiltrate Side 7 alone, with whom he had a long history, but was discovered, and the Titans immediately deployed their mobile suits.
Char's plan to avoid fighting in a densely populated area failed, and the situation escalated into a surprise attack by three Rick Dias.

U.C.0087.03.02. The Gryps War breaks out | ふっださん's Gunpla works