Usually people relate 'army' with the military connotation.
But sometimes you can say 'army of robots' which not always you mean they've military backgrounds or they're armed, but friendly one. Another example includes 'Army of Jesus' or 'Salvation Army', and of course they've nothing to do with weapons and real army either.
Is there any alternative term which aims to describe the huge number of entities (like people or robots) in similar matter as 'army', but without being ambiguous that it has something to do with military, but to not lessen its meaning of its force?