was devised the system whereby referees show a yellow card for a caution and a red card for an expulsion, which was first used in the 1970 World Cup. These cards have also been adopted – with appropriate differences depending on the rules – in rugby, water polo, and other sports. Later career Aston became senior lecturer of the Football Association Referees' Panel and Chief Instructor for the American Youth Soccer Organization (AYSO), a position he held for 21 years. In 1997, he was awarded the MBE. The Ken Aston Camp is held annually in Orange, CA. The camp honours Ken's commitment to service and excellence. The Ken Aston Cup, was an annual competition to recognise skilled referees in AYSO. The tournament was held annually in southern California. After a multi-year hiatus, it is scheduled to be held in Costa Mesa, California in March 2020. As long as they were able, Aston and his wife Hilda were the guests of honour on the fields at the camp and competition. Ken taught at the camp and they drove around the tournament in a golf cart, observing, chatting, and making new friends. Their golf cart carried a Union Jack, making them easy to locate. References External links Ken Aston Referee Society Ken Aston - The Person http://www.kenaston.org Ken Aston – the inventor of yellow and red cards at FIFA.com Ken Aston Camp 1915 births 2001 deaths Military personnel from Colchester British Indian Army officers People from Colchester English football referees FA Cup Final referees Founders of association football institutions Members of the Order of the British Empire 1962 FIFA World Cup referees English Football League referees British Army personnel of World War II Royal Artillery personnel Indian Army personnel of World War II