In the name of the Immortal God Emperor of Mankind, prepare for GLORY!
My Black (RED) Templar Space Marine army follows my attack, support, and defense army template, assigning a role to each unit in the army, and executing that role on the table regardless of the opposition.
For the attack group I have two units of assault terminators, a land raider, and assault marines. The land raider takes either the lightning claw or thunder hammer assault terminators and drives them into the heart of the opposing army. Following this are two units of assault marines and the second unit of terminators deep striking down. The goal is total glory, and to keep my opponent’s army busy dealing with this group for as long as I can.
The defensive group are razorbacks with Space Marine inside- the assignment of these units is to complete the mission win conditions of the game- objectives, table quarters, kills, etc. They will work as a group, but each is self sufficient as the mission might require them to break up as much as I don’t like to do that. Razorback provide protection, mobility, and some nice firepower vs. just taking a rhino.
For my support unit I have a dreadnought- Brother Ares. He kind of floats around on the table seeing what area needs a bit more support- perhaps my attack units, or defense units? Maybe there is a mistake my opponent made with a unit that I can exploit? Each turn it is where is Brother Ares needed most.