On This Day - What happened 18 April

The Austrians were alarmed by the French thrust that reached all the way to Leoben, about 100 km from Vienna, and finally decided to sue for peace. The Treaty of Leoben, followed by the more comprehensive Treaty of Campo Formio, gave France control of most of northern Italy and the Low Countries, and a secret clause promised the Republic of Venice to Austria. Bonaparte marched on Venice and forced its surrender, ending 1,100 years of independence. He also authorized the French to loot treasures such as the Horses of Saint Mark.

On 17 April 1879, Milutin Tesla died at the age of 60 after contracting an unspecified illness. During that year, Tesla taught a large class of students in his old school in Gospić.

Xerox was founded in 1906 in Rochester, New York, as The Haloid Photographic Company. It manufactured photographic paper and equipment.

By 18 April, the first elements of the Romanian offensive were completed and the Hungarian front was broken.

The men arrived in New York on April 18, and Luciano was sent to jail without bail.

The Doolittle Raid, also known as the Tokyo Raid, was an air raid on 18 April 1942 by the United States on the Japanese capital Tokyo and other places on Honshu. It was the first air operation to strike the Japanese archipelago. It demonstrated that the Japanese mainland was vulnerable to American air attack, served as retaliation for the attack on Pearl Harbor. The raid caused negligible material damage to Japan, but it had major psychological effects. In the United States, it raised morale. In Japan, it raised doubt about the ability of military leaders to defend the home islands, but the bombing and strafing of civilians also steeled Japanese resolve to gain retribution, and this was exploited for propaganda purposes.

On April 18, 1942, Reagan was ordered to active duty for the first time. Due to his poor eyesight, he was classified for limited service only, which excluded him from serving overseas.

On 18 April 1944 Croatia was declared as Judenfrei. Approximately 55,000-60,000 Yugoslav Jews were killed in the Holocaust, representing nearly 80% of its pre-war population.

By April, the Western Allies crossed the Rhine north and south of the Ruhr, encircling the German Army Group B. The battle of encirclement took place from 1 to 18 April.

He knew how the outside world would view the criminal acts committed by the regime, and had no desire to subject himself to the "debacle" of a trial. He burned his private papers on the night of 18 April.

United States Army Air Forces launched a massive firebombing campaign of strategic cities in Japan in an effort to destroy Japanese war industry and civilian morale.

The final meeting of the League of Nations took place on 18 April 1946 in Geneva.

The "Inner Six" European countries signed the Treaty of Paris in 1951, establishing the European Coal and Steel Community (ECSC).

The U.S. government prevented Du Bois from attending the 1955 Bandung Conference in Indonesia.

Einstein died in Princeton Hospital early the next morning at the age of 76, having continued to work until near the end.

At 1:00 am, Cuban Army infantrymen and militiamen started an offensive. Despite heavy losses on the part of the Communist forces, the shortage of ammunition forced the brigadistas back and the T-34 tanks continued to force their way past the wreckage of the battlefield to press on the assault.

At 10 am, a tank battle had broken out, with the brigadista holding their line until about 2:00 pm, which led Olvia to order a retreat into Girón.

At about 17:00 on 18 April, FAL B-26s attacked a Cuban column of 12 private buses leading trucks carrying tanks and other armor, moving southeast between Playa Larga and Punta Perdiz. The vehicles, loaded with civilians, militia, police, and soldiers, were attacked with bombs, napalm, and rockets, suffering heavy casualties.

During the night of 18 April, a FAL C-46 delivered arms and equipment to the Girón airstrip occupied by Brigade 2506 ground forces and took off before daybreak on 19 April.

By about 10:30 am on 18 April, Cuban troops and militia, supported by the T-34 tanks and 122mm artillery, took Playa Larga after Brigade forces had fled towards Girón in the early hours. During the day, Brigade forces retreated to San Blas along the two roads from Covadonga and Yaguaramas. By then, both Fidel Castro and José Ramón Fernández had re-located to that battlefront area.

Following the last air attacks, San Román ordered his paratroopers and the men of the 3rd Battalion to launch a surprise attack, which was initially successful, but soon failed. With the brigadistas in disorganized retreat, the Cuban Army and militiamen started to advance rapidly, taking San Blas only to be stopped outside of Girón at about 11 am.

The Rajang Area Security Command or simply known as RASCOM is a Malaysian security area that covers the area of Rajang River in Sarawak. It was established on 18 April 1972 by the Malaysian government and its main headquarters is located at Sibu.

The same day as Iraq's attack on al-Faw peninsula, the United States Navy launched Operation Praying Mantis in retaliation against Iran for damaging a warship with a mine. Iran lost oil platforms, destroyers, and frigates in this battle, which ended only when President Reagan decided that the Iranian navy had been put down enough.

On the morning of 18 April, students remained in the Square. Some gathered around the Monument to the People's Heroes singing patriotic songs and listening to impromptu speeches by student organizers, others gathered at the Great Hall. Meanwhile, a few thousand students gathered at Xinhua Gate, the entrance to Zhongnanhai, the seat of the party leadership, where they demanded dialogue with the leadership. Police restrained the students from entering the compound. Students then staged a sit-in.

In early 1990 Kosovar Albanians held mass demonstrations against the special measures, which were lifted on 18 April 1990 and responsibility for public security was again assigned to Serbia.

Nixon suffered a severe stroke on April 18, 1994, while preparing to eat dinner in his Park Ridge, New Jersey home. A blood clot resulting from the atrial fibrillation he had suffered for many years had formed in his upper heart, broken off, and traveled to his brain. He was taken to New York Hospital–Cornell Medical Center in Manhattan, initially alert but unable to speak or to move his right arm or leg. Damage to the brain caused swelling (cerebral edema), and Nixon slipped into a deep coma.

Bryant and Laine married on April 18, 2001, at St. Edward the Confessor Catholic Church in Dana Point, California. The wedding was not attended by Bryant's parents, his two sisters, his longtime advisor, and agent Arn Tellem, or his Laker teammates. Bryant's parents were opposed to the marriage for a number of reasons. Reportedly Bryant's parents had problems with him marrying so young, especially to a woman who was not African-American. This disagreement resulted in an estrangement period of over two years, which ended when the couple's first daughter was born.

AZ Alkmaar announced on 18 April 2014 that Van Basten would replace Dick Advocaat at the start of the 2014–15 season.

On 19 April, Xiaomi launched Mi 6, its flagship phone at the time.

On April 18, 2019, the company became a public company via an initial public offering. After pricing at US$36 per share, the share price increased over 72% on the first day of trading. The company was valued at US$16 billion by the end of its first day of trading. Prior to the IPO, Dropbox invested $5 million in Zoom.

The English dramatist George Colman the Elder was born in Florence.