Light the Way
The battle formation was one of the trump cards of the Larkinson Clan. Enabled by battle networks which were entirely spiritual in nature, they essentially allowed spiritually-powerful entities to channel their prodigious might directly into the material realm!
The odd part about battle formations was that they should technically be illegal. The key to enabling them from outputting the massive damage they were known for was by aligning and combining the minds of many different mech pilots connected to the network.
This was in effect a combination attack that allowed mechs and mech pilots to exceed their hard firepower limitations!
In fact, people had attempted similar means in the past. For example, there was a case where a mech designer came up with a purpose-built machine that could merge together and combine their weapons in order to form a huge laser weapon that was the equivalent of the main cannon of a cruiser!