Last time we talked about the history of the Roman maniple as a short introduction to this series of articles. There are multiple ways we can interpret the lessons of the maniple and apply them to our game of 40k, both strategically and in the story of the universe. Because we have different armies we will be looking at different applications of different principles all shown in the maniple system. This is going to take a while, so settle in and I hope you enjoy my ramblings.

The Roman phalanx was abandoned because of its inability to adapt to the uneven terrain of Samnium. Rather than trying to force their enemies to fight on terrain favorable to the Romans, the maniple was organized into smaller groups that could fight without relying on the terrain to allow the phalanx to form. Now, as far as infantry goes 40k players don't have to worry about the phalanx's lack of maneuverability because infantry models in 40k move independently as long as they remain within two inches of each other. Fantasy players have to worry about their regimented units wheeling and could look at ancient warfare tactics in a more directly applicable manner, but that would disregard a lot of the intricacies of a game I am not generally familiar with. Though there is one place in 40k where the phalanx's lack of maneuverability still comes back to bite players.

This brings up one of the bigger differences between 40k and fantasy, how you win the game. In Fantasy there are missions, but generally speaking the point of the game is to win on victory points and the best way to do that is to KILL THEM ALL (KTA), as the Templar would say it. This points armies toward being based around being the killy-est they can be and disregarding all else. I exaggerate as there are different units in fantasy and different unit types that serve to kill in different ways and most of the game happens in the movement phase, but it is generally resolved through bloody combat. There are 40k armies that are similarly oriented, for instance the all Death Company army that a Mr. Kent won best sport with at Conquest Calgary's reenactment of the Drop Site Massacre, but there is a flaw in the army's design.

There are some advantages to troops lacking the durability and destructive capacity of other types of units. Mr. Gilstrap from The 11th Company was discussing why some Grey Knight players only field what are essentially three to five man guardsman squads and put it very well saying the Grey Knight player can bet his opponent 'won’t shoot his acolytes because if you do, you are neglecting killing something that is far more lethal.' If we were looking at a space marine army we might consider how the opponent might prioritize targets. Sniper scouts are the least durable unit in the codex and have the least damage output, besides a drop pod or an empty rhino. If you are looking at them in the KTA mindset, they are the worst unit in the codex, but if you are looking at them in the same army as a hammer unit (or two) like thunder hammer terminators, they reach near invulnerability because of your opponent's target priority, assuming they are also in a KTA mindset. The terminators are a much larger threat to kill any unit, making them the more likely to be killed themselves, where the scouts are pathetic and not worthy of the shots that would be spent to kill them in a KTA mindset.
The phalanx was a great example of a hammer unit and a KTA mindset. It shoved a line of shields and spears forward until it slaughtered its opponents. The Samnites had the advantage because they knew the terrain better and used small groups and guerrilla tactics to harass the Romans rather than fighting a set battle. Unfortunately, 40k is a set battle scenario and to better adapt out tactics to it, we need to look at how the Romans fought the Samnites. The broke up the phalanx into smaller groups that could work independently. Each maniple had its own commander and was able to fight in a phalanx three men deep and forty men across; a very small amount for a phalanx. All of the maniples could fight together, but individual maniples could be deployed to different parts of the battle field to deal with threats to the army as a whole. So, how can this be applied to 40k?

So, what we need in our army is to be able to react to changes on the battlefield, a way to keep our troops alive and plenty of troops. We know that most troops units don't get much in the way of damage output, but that means they are less of a threat to your opponent. They also aren't as durable as other units, but we can throw more bodies in to make them durable, which makes them a larger threat, so less bodies is less threatening.
We also need some kind of distraction unit, not necessarily a hammer unit, but one that is more threatening than our troops so the enemy shoots that unit rather than our troops and keeps our troops alive longer so they can win games for us. Again, these distractions would preferably be mobile, as they can apply their threat to more places on the board and distract more units from our troops. Unfortunately, these distractions are expensive so we probably need to have really small troops choices to afford to have the distractions we need.
So we need small, ignorable units in our troops and distractions in other slots that are generally distracting because they cause more damage than the troops units do. We need to be mobile, so multiple small units that don't do much damage guarded by distractions that cause more damage. Can you think of any examples of how other players have applied these principles?
Adhuc tua messis in herba est