All individuals in an insect society share their food in a nest space but only some go out and get it; these foragers are usually older and larger than average. As a society grows or as new species with bigger societies evolve, more food has to be found and taken into the nest from further afield. This creates problems not only of navigation, which is highly developed even in non-social insects, but of search, choice, communication, efficiency, transport and defence. (For insect foraging see Hassell and Southwood, 1978.) Here the method and organization of food collection is considered in stages of complexity. In this chapter a system is explained in which little communication between individuals occurs, and the methods which each forager uses are of paramount importance. In the next chapter a system is discussed in which transfer of information about sources by conducting parties, using trials, signs and symbols can be superimposed on individual action, and the decision for the individual is whether to arouse nest mates or not. Finally, a system is described in which nest extensions into the surrounding habitat are developed and territories organized.