On August 24, the American army under Wayne's leadership defeated the western confederacy at the Battle of Fallen Timbers, and the Treaty of Greenville in August 1795 opened up two-thirds of the Ohio Country for American settlement.
In September 1937, the Soviet Union and China signed the Sino-Soviet Non-Aggression Pact and approved Operation Zet, the formation of a secret Soviet volunteer air force, in which Soviet technicians upgraded and ran some of China's transportation systems.
In August, Chinese communists launched an offensive in Central China. The Hundred Regiments Offensive took place between 20 August to 5 December 1941, was a major campaign of the Communist Party of China's National Revolutionary Army divisions commanded by Peng Dehuai against the Imperial Japanese Army in Central China. The battle had long been the focus of propaganda in the history of Chinese Communist Party but had become Peng Dehuai's "crime" during the Cultural Revolution. Certain issues regarding its launching and consequences are still controversial.
No signed version ever existed. The document was threshed out through several drafts and the final agreed text was telegraphed to London and Washington. President Roosevelt gave Congress the Charter's content on 21 August 1941.
21 August 1945: While conducting impromptu experiments on a third core (an alloy of plutonium and gallium) which had been prepared for atomic warfare at Los Alamos National Laboratory, physicist Harry Daghlian received a lethal dose of radiation. He died on 15 September 1945.
The following month, Nixon was renominated at the 1972 Republican National Convention. He dismissed the Democratic platform as cowardly and divisive.
In 1974, Zayed settled the outstanding border dispute with Saudi Arabia by the Treaty of Jeddah by which Saudi Arabia received the output of the Shaybah oilfield and access to the lower Persian Gulf in return for recognizing the UAE.
The first film packaged and licensed by Marvel Studios was Blade, based on the vampire hunter Blade. The film was directed by Stephen Norrington and starred Wesley Snipes as Blade. It was released on August 21, 1998, grossing $70,087,718 in the United States and Canada and $131,183,530 worldwide.
While on holiday in Las Vegas in August 2012, Harry and an unknown young woman were photographed naked in a Wynn Las Vegas hotel room, reportedly during a game of strip billiards. The pictures were leaked by American celebrity website TMZ on 21 August 2012, in May 2019, Splash News issued a formal apology to Harry and his wife for sending photographers to their Cotswolds residence, which put their privacy at risk. The agency also agreed to pay a "substantial" sum of damages and legal costs associated with the case.
On 21 August, Immobile scored on his debut in Lazio's opening match of a 4–3 away win over Atalanta. Immobile finished the season with 23 league goals in 36 appearances plus 3 goals in the Coppa Italia, surpassing his total when he won the Capocannoniere with Torino in the 2013–14 season, though this time he did not win the Capocannoniere, losing it to Bosnian striker Edin Dzeko of cross-town rivals Roma, who scored 29 league goals.
Jeenbekov resigned from the post of Prime Minister on 21 August 2017, after being named as an official candidate in the 2017 presidential election. He stated that he "wanted to be in an equal position with other presidential candidates."
On August 21, 2018, former Trump campaign chairman Paul Manafort was convicted on eight felony counts of false tax filing and bank fraud. Trump said he felt very badly for Manafort and praised him for resisting the pressure to make a deal with prosecutors, saying "Such respect for a brave man!" According to Rudy Giuliani, Trump's personal attorney, Trump had sought advice about pardoning Manafort but was counseled against it.