A swarm raid is a strategic raid in which ants plow forward destroying everything in there path. It is a mass of ants searching for food and a place for a new bivouac. At this new nest site they will stop to develop larva and do smaller foraging raids. The most commonly used form of raids is the column raid in which army ants leave the bivouac in strings of foragers to search for prey. An example of this is shown by E. hamatum.
Ants have a variety of prey.
Some species of ant may eat such a wide variety of prey that they include seeds in their diet. Brachyponera senaarensis is a species that is active throughout the year. Because of this fact they have been seen to have a very adaptive diet. As stated in Lachaud's and Dejean's article on B. senaarensis they are able to change from a strictly carnivorous diet to a granivorous diet depending on the environmental changes. They have exhibited a predacious diet also.