BRUSSELS (AFP) - Belgian troops are preparing to battle an invasion of hairy caterpillars which can provoke allergic reactions in humans, authorities announced Friday. From Monday, a contingent of 24 soldiers will take part in the fight against the well-organised creepy-crawlies, called procession caterpillars because of their habit of marching in lines. They will join forces with firefighters, civil protection officers and private firms already doing battle against their tiny foes. For the last two weeks several communes in Limburg have been invaded, with pedestrians, cyclists, outside workers and school children among the victims. Authorities said that some 20 communes...