Assault fleet

An assault fleet is a military unit typically used by the Imperial Starfleet.

In January 2153, ISS Enterprise (NX-01) broke off from its assault fleet to study a hypergiant star, where it made first contact with the Vissians. The fleet also included ISS Intrepid and several Warp Deltas. After Enterprise liberated the Vissian ship's cogenitor, the assault fleet and its MACO teams captured the ship. (Before In a Mirror, Darkly)