Commander of I Corps who is placed under arrest by the head of the Saigon government, Nguyen Cao Ky, for being suspected of plotting a coup. ARVN divisions rallied to General Thi’s support at his headquarters in Da Nang. Caputo mentions General Thi in the context of describing how the ARVN’S “intramural feud” diminished their attention to the VC, causing U.S. Marines to pick up the slack.