Try to plausibly reverse one or more.
King Faisal II vs. Nasserite factions of Iraqi Armed Force, 1958- Monarchy overthrown, executed by firing squad. Eventually leads to Saddam's rule.
Gen. Batista vs. Fidel Castro, Winter 1959. Batista overthrown, family dictatorship.
ARVN Rebels vs. ARVN loyalists, Nov. 1, 1963- President Diem overthrown, executed with Nhu.
Dominican Army rebels vs. Gen. Rafael Trujillo, May 1961- Assassinated in motorcade
Greek Army vs. King Constantine, 1967- Monarchy abolished
Col. Gaddafi vs. King Idris, 1969- Monarchy abolished
Ethiopia- Gen. Andom, Col. Mengistu vs. Emperor Haile Selassie, 1974- Junta under Mengistu, Emperor killed, Monarchy abolished
Afghanistan- Daoud Khan vs. King Zahir Shah, 1973
Enrile, Ramos vs. President Marcos, 1986- People Power, Marcoses flee, 1987 Constitution under Corazon Aquino. Joint military-civilian.
2006- Coup attempt by Rebel AFP vs. President Gloria Arroyo, Arroyo issues 1072, Martial Law.
2006- Royal Thai Army vs. PM Thaksin's government- Thaksin resigns, forced into exile. Junta takes over while retaining monarchy.