Today is Monday, Aug. 7, the 219th day of 2017. There are 146 days left in the year.

On August 7, 1942, U.S. and other allied forces landed at Guadalcanal, marking the start of the first major allied offensive in the Pacific during World War II. (Japanese forces abandoned the island the following February.)

In 1782, Gen. George Washington created the Order of the Purple Heart, a decoration to recognize merit in enlisted men and noncommissioned officers.

In 1789, the U.S. Department of War was established by Congress.

In 1882, the famous feud between the Hatfields of West Virginia and the McCoys of Kentucky erupted into full-scale violence.

In 1927, the already opened Peace Bridge connecting Buffalo, New York, and Fort Erie, Ontario, Canada, was officially dedicated.

In 1947, the balsa wood raft Kon-Tiki, which carried a six-man crew 4,300 miles across the Pacific Ocean, crashed into a reef in a Polynesian archipelago; all six crew members reached land safely.

In 1957, Oliver Hardy (the heavier half of the Laurel and Hardy comedy team) died in North Hollywood, California, at age 65.

In 1959, the United States launched the Explorer 6 satellite, which sent back images of Earth.

In 1964, Congress passed the Gulf of Tonkin resolution, giving President Lyndon B. Johnson broad powers in dealing with reported North Vietnamese attacks on U.S. forces.

In 1974, French stuntman Philippe Petit repeatedly walked a tightrope strung between the twin towers of New York's World Trade Center.

In 1989, a plane carrying U.S. Rep. Mickey Leland, D-Texas, and 14 others disappeared over Ethiopia. (The wreckage of the plane was found six days later; there were no survivors.)

In 1998, terrorist bombs at U.S. embassies in Kenya and Tanzania killed 224 people, including 12 Americans.

In 2010, Elena Kagan was sworn in as the 112th justice and fourth woman to serve on the U.S. Supreme Court.