Operation Ripper happened on 1951-04-04.
The Ripper - video game - happened in 360.
Sherlock Holmes Versus Jack the Ripper happened in 360.
As far as we know, the ripper killed 5 prostitutes and there was a double event which one could not be a ripper killing. So apart from being a prostitute and drunk in the early hours of the morning, the chances of being attacked by the ripper are minimum.
Operation Veritable happened in 1945.
Operation Sunstar happened in 1941.
Operation Roundabout happened in 1943.
Operation Birke happened in 1944.
Operation Medusa happened in 2006.
Operation Crackers happened in 1943.
Operation Askari happened in 1983.
Operation Python happened in 1971.
Operation Newton happened in 1944.