Posted on September 15, 2021 by CNBC-TV18From arrival of battle tanks to bankruptcy of Lehman Brothers, take a look at key events that took place on Sep 15 1861- Bharat Ratna winner Mokshagundam Visvesvaraya, regarded as the ‘Father of Modern Mysore,’ was born on September 15. His birth anniversary is celebrated as ‘Engineer’s Day’ in the country. (Image: Shutterstock) 1916 – Military tanks, originated by Sir Ernest Swinton, went into action for the first time as part of the Allied offensive at the Battle of the Somme. (Representative image: PTI | text: Reuters) 1949 – Konrad Adenauer was elected the first chancellor of West Germany and Theodor Heuss first president. (Image: AP | text: Reuters) 2000 – Opening ceremony of Olympic Games in Sydney, Australia. (Representative image | text: Reuters) 2001 – President George W. Bush said for the first time that the United States was ‘at war’, singling out Saudi-born militant Osama bin Laden, based in Afghanistan, as a prime suspect behind the September 11 attacks. (Text: Reuters) 2008 – Pink Floyd keyboard player and founding member Richard Wright, who co-wrote five songs on “Dark Side of the Moon”, which was released in 1973, died. (Image: Wikimedia Commons | text: Reuters) 2008 – Lehman Brothers Holdings Inc. filed for Chapter 11 bankruptcy, the largest in US history. (Text: Reuters)