Federation Attack Fighters
These tough little ships are one of the only Starfleet vessels designed for battle. And in the Dominion War of Star Trek: Deep Space Nine season six and seven, they got their fair share of battles. These ships first appeared as appropriated Marquis vessels, causing guerrilla attacks on the Cardassians and Federation, before they were incorporated into Federation fleets during the Dominion War.
They may not be the most powerful of ships but armed with photon torpedos they are strong enough to cause some significant damage. Their best moment? The episode
Sacrifice of Angels, where
eight waves of attack fighters are sent to break a hole in the Cardassian lines, in the battle to retake Deep Space Nine (The most spectacular space battle Star Trek has ever committed to screen).