Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming. People began using it to treat infections in 1942. There are several enhanced penicillin families which are effective against additional bacteria; these include the antistaphylococcal penicillins, aminopenicillins and the antipseudomonal penicillins. They are derived from "Penicillium" fungi. The term "penicillin" is often used generically to refer to benzylpenicillin (penicillin G, the original penicillin found in 1928), procaine benzylpenicillin (procaine penicillin), benzathine benzylpenicillin (benzathine penicillin), and phenoxymethylpenicillin (penicillin V). Procaine penicillin and benzathine penicillin have the same antibacterial activity as benzylpenicillin but act for a longer period of time. Phenoxymethylpenicillin is less
HMS Valentine (L69) transferring to Dover Command in May. "Valentine" was one of four destroyers deployed to the Scheldt estuary to support demolition operations and the evacuation of shipping from Antwerp. While providing AA cover to Allied troops, "Valentine" was damaged by dive bombers on 15 May 1940, and beached near Terneuzen. 31 of "Valentine"s crew were killed, with a further 21 injured. "Valentine" was partly salvaged and broken up in 1953, but part of the ship's hull remains and is sometimes visible at low tide. HMS Valentine (L69) HMS "Valentine" was a , built in 1917 for the Royal Navy. She fought