So I was on the Japanese Wikipedia page, reading about the army formations used in the Sengoku era and something struck me.

How about using real life formations in the game?
Anyone does that? We're discounting the simple line.

I know a lot of people use the roman triple line checkers right?

What about others?

Epaminondas's echelon
Alexander's echelon refused left (or right) flank

And now to name a few Sengoku Era foramtions:
Note: Usually if the general dies the fight is lost then and there.

Fish Scale: Basically a giant wedge. The difference is the general unit is placed at the centre of the base, unlike Alexander's wedge. We don't want to loose our generals after all.

Crane's Wings: V formation. At the point is placed the general. As the general is out in the open, it's to lure the enemy to attack the general unit, in which case the others would envelop. Because the general is in a dangerous position using himself as bait, often it's a Y instead. According to Wiki this formation often results either in total victory or total defeat (or in the game's case, heroic victory or crushing defeat)

Arrow: <---- formation. The general is at the centre of the shaft. Much better penetration ability than the Fish Scale but much more dangerous to being flanked and enveloped, to which its defenses are also much weaker.

Circle: Face outword with general in centre. For safety to prevent surprise attack from all sides. As troops is spread out evenly, once a concentrated attack comes the formation need to quickly be changed to prevent the circle being pierced (according to Japanese Wikipedia anyway, but makes sense). Also it is completely useless in attack.

Wheel spoke: A circle but the troops walk nonstop around the general. One part is send out to attack, and then pulled back into the circle to rest (while marching) while another is send out. So I guess good at a fight of attrition.

There's 4 more but it seems their uses are debanted over the internet on various sites.