The sauna tradition is so strong that whenever Finns go abroad, they relish the chance to have a good sauna: even the Finnish Church in Rotherhithe, London, has its own sauna. Finnish soldiers on peacekeeping missions are famous for their saunas; even on the UNMEE mission in Eritrea, a sauna was one of the first buildings to be erected. A Second World War-era Finnish military field manual states that a break of eight hours is all that is required for a battalion to build saunas, warm them and bathe in them. Saunas, even in the military, are strictly egalitarian places: no titles or hierarchies are used in the sauna.