Hijikata Toshizo vs Roberto Viola

Hijikata Toshizo joined the newly formed Shinsengumi in Kyoto. He quickly became the vice-commander, known for his strict discipline and ruthless enforcement of the group's code. He helped establish the Shinsengumi as a feared police force.

Hijikata led Shinsengumi forces in a raid on the Ikedaya Inn in Kyoto, where anti-shogunate plotters were meeting. The raid resulted in the deaths or capture of many plotters, thwarting a plan to burn Kyoto. This event cemented the Shinsengumi's reputation.

Hijikata fought in the Battle of Toba-Fushimi as part of the shogunate forces. The Shinsengumi suffered heavy losses and were forced to retreat. This defeat marked the beginning of the end for the Tokugawa shogunate.

Hijikata fought in the Battle of Hakodate, the final battle of the Boshin War, as part of the Republic of Ezo forces. He was killed in action by a bullet while leading a charge. His death marked the end of the Shinsengumi and the last resistance to the Meiji Restoration.

On March 29, 1981, Roberto Viola was appointed President of Argentina by the military junta, succeeding Jorge Videla. His presidency was part of the National Reorganization Process, the military dictatorship that ruled Argentina from 1976 to 1983.

During Viola's presidency, the military junta continued its campaign of state terrorism against leftist guerrillas, political opponents, and suspected subversives. Thousands were kidnapped, tortured, and killed or disappeared. Human rights organizations documented systematic abuses.

On December 11, 1981, Roberto Viola was removed from the presidency by the military junta due to health issues and internal disagreements. He was replaced by Leopoldo Galtieri. Viola's removal reflected instability within the dictatorship.

In 1985, Roberto Viola was convicted by the Argentine courts for human rights abuses committed during the Dirty War, including illegal detentions, torture, and forced disappearances. He was sentenced to 17 years in prison, later reduced.