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) Second Battle of Heligoland Bight. An attempt by "Valentine" and the destroyer to carry out a torpedo attack on German cruisers proved unsuccessful. In 1919, "Valentine" was deployed to the Baltic Sea as part of the British intervention in the Russian Civil War, which helped to ensure the independence of the Baltic states. Post-war, "Valentine" formed part of the 2nd Destroyer Flotilla, first as part of the Atlantic Fleet and later as part of the Mediterranean Fleet. In the 1920s, "Valentine"s twin torpedo tubes were replaced by triple tubes, giving a torpedo armament of six 21 inch torpedoes, and the