[Mobhack]

A section (platoon, troop) is usually half a battery, and is really only used for those armies with > 4 gun batteries.

8 gun batteries - e.g. UK arty at times - is usually organised as 2 4 gun troops.

a 2 gun section would therefore be only of use for 4 gun batteries. You would need 4 for an 8 gun bty - which
is just too many off-map units wasted, when you could have done them in 2x4's.

6 gun batteries are split into 2 sections of 3.

4 (or less, like some heavies) - all fit into 4 weapon slots of an off-map unit, so are done as one.

(On map arty uses individual guns, however mortars are usually represented by sections of 2-3 tube elements).

Cheers
Andy