Series two rules in hand

[Blackcloud6]

From AP:  "It's a six-gun battery, with 5 officers, 188 enlisted and 139 horses. In Infantry Attacks terms, that's two pieces, the guns and the wagons. Each piece has a gun crew of six, with five more handling the caisson."

So, the gun counter includes everything in the battery except for the transportation sections.   Thus, the battery symbol is spot on.