Tactical
From Exterminatus Manual
Tactical Marine (Tactical) http://www.40ksource.com/gallery/Imperial%20Player%20Models/Marine.jpg
Overview
The majority of the 2nd company's marines are formed into flexible 'Tactical' squads. The majority of marines in a Tactical squad are equipped to deal with all sort of situations, these make up the Tactical class in Exterminatus and are the basic fighting class of the Imperial team.
Weapons
The main battle weapon of Tactical marines is the awesomely powerful Boltgun. Along with a few Grenades, backed up by a Bolt Pistol side-arm and a Knife for when things get very close a Tactical marine has all he needs to take on most things in the galaxy.
Tactics
The Boltgun is a slow cycling weapon, take your time, aim, make your shots count. If they get in close, switch to your Bolt Pistol, it's not as powerful, accurate or long ranged, but it's higher rate of fire will help you in a tight spot.
