I'm a 20th Century military historian based in Canberra, Australia. I make occasional changes to pages related to military history, particularly related to Australia and the South West Pacific Area. Recently I have been involved with improving articles related to the Manhattan Project. I have also been involved with improving articles related to the history of the Paralympics.
In American English, U.S. (with points) is more common as the standard abbreviation for United States, although The Chicago Manual of Style now deprecates the use of the periods (16th ed.). US (without points) is generally accepted in most other national forms of English.