Currently there are approximately 9000 British troops deployed in Afghanistan. About 3800 will be withdrawn during this year, reducing the numbers to about 5200. During 2014 operations will most likely cease.
Infantry may be stationed anywhere the US Army is garrisoned or deployed. In essence, every soldier in the US Army, regardless of his MOS or assignment is infantry.
Tom Brown - British Army soldier - died in 1746.
Tom Brown - British Army soldier - was born in 1705.
Ian Bailey - British Army soldier - was born in 1959.
James Hall - British Army soldier - died in 1968.
James Hall - British Army soldier - was born in 1893.
James Graham - British Army soldier - was born in 1791.
James Lovell - British Army soldier - was born in 1899.
James Lovell - British Army soldier - died in 2004.
Not sure I understand your question but I'll try to answer anyway. Where a soldier will be stationed is a function of Army personnel. Your local recruiter can give you a phone number. Once a soldier is assigned to a location the Commanding Officer is in charge.
Ernest Hayes - British Army soldier - died on 1938-02-19.
Ernest Hayes - British Army soldier - was born on 1898-04-16.