The BGS – which today forms part of the Bundespolizei – was responsible for policing Germany's frontiers. It was initially a paramilitary force of 10,000, established in 1951, which was responsible for policing a zone 30 kilometres (19 mi) deep along the border. It eventually became the basis for the present national semi-militarised police force.  Its numbers were later expanded to 20,000 men, a mixture of conscripts and volunteers equipped with armoured cars, anti-tank guns, helicopters, trucks and jeeps. Although it was not intended to be able to repel a full-scale invasion, the BGS was tasked with dealing with small-scale threats to the security of West Germany's borders, including the international borders as well as the inner German border. It had limited police powers within its zone of operations to enable it to deal with threats to the peace of the border. The BGS had a reputation for assertiveness which made it especially unpopular with the East Germans, who routinely criticised it as a reincarnation of Hitler's SS . It also sustained a long-running feud with the Bundeszollverwaltung over which agency should have the lead responsibility for the inner German border.