As for what wargamers struggle with in terms of terminology...that shall never change...they shall always struggle and most have no desire to listen anyway...but this is not about wargamers...any time two bodies of artillery are brought together, no matter the number of pieces, it is called a massed battery.
As for Senarmont’s massed battery acting independently as the other arms...yes...normally it is the artillery that support the infantry and cavalry. Here you see a large massed battery being supported and not supporting the other two arms.
Sorry but when stating that General Senarmont executed the manoeuvre in a brilliant military manner...doesn’t necessarily mean or imply that General Senarmont knew what he was going to do from the start...but what it does imply is that his use of minor tactics and grand manouevres in this particular circumstance, and his coup d'oeil...or in today’s military what we would call a basic form of TTP’s (Tactics, Techniques & Procedures and which depend upon the tactics that varied according to the mission, enemy, terrain, your troops and time available...), or that his use of METT-T; was executed in a brilliant military manner.
As for a changing of the universal sentiment...perhaps I didn’t explain it properly...Senarmont followed the general principle and system of how artillery was to be manoeuvred...and no...I have never read of any memoire that wrote of the battle, that mentions that it changed universal sentiment on grand manoeuvres. But to say that this manoeuvre of a large massed battery in such a manner was not a surprise to those at the battle...is being unrealistic...