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 Askari happened in 1983.
Operation Python happened in 1971.
Operation Nicety happened in 1942.
Operation Albion happened in 1917.
Operation Colombo happened in 1975.
Operation Batman happened in 1942.
Operation Protea happened in 1981.
Operation Harling happened in 1942.
Operation Concert happened in 1943.