A guy in Brazil posted video of thousands of army ants that formed a "body bridge" to attack a giant wasp nest. The bridge is a loop that hangs down from a porch ceiling and then goes back up to the nest.
According to his post, the loop helps the ants stay walking upright to carry heavy loads usually larvae, eggs, and even some adult wasps that don't escape.
Here's a story.
Attack of legionary ants (also known as army ants or marabunta) to a wasp honeycomb. Impressive the level of swarm intelligence and collective computation to form that bridge. pic.twitter.com/StvDkmv8x8— Francisco Boni (@boni_bo) August 5, 2018