So 1 company of self-propelled artillery, 1 company of escorts (2 platoons) & recon (1 platoon), and 1 company of J-27 trucks with trailers + Heavy APC with battalion headquarters staff and communications equipment. Something like that?
Nah, per artillery battalion three batteries which each have
- 1 platoon self-propelled artillery (4 guns)
- 1 platoon trucks (ammo transport)
- 1 platoon with communications equipment and similar to stand in for battery sensor/command vehicles.
Here's the Orbat of German divisional Artillery Regiment 12 in 1989 for some realism:
a) Staff/HQ Battery
- includes two "Special Artillery Platoons" (alternate crews for one firing platoon each, for nuclear weapons deployment; one for field artillery battalion in regiment, the other for artillery battalions of attached brigades)
b) Escort Battery
- three infantry platoons of 70 men each supported by attached 3x 20mm automatic guns (on trucks)
c) Field Artillery Battalion
- Staff Battery, includes two HQ platoons, each with 4x 20mm automatic guns for air defense
- Field Artillery Battery (three firing platoons with 3x FH70 155mm each)
- Field Artillery Battery (three firing platoons with 3x FH70 155mm each)
- Field Artillery Battery (three firing platoons with 3x M110A2 203mm each)
- Field Artillery Battery (three firing platoons with 3x M110A2 203mm each)
- attached (peacetime) medical / driver training / sports group
d) Rocket Artillery Battalion
- Staff Battery, includes one HQ platoon with 4x 20mm automatic guns for air defense
- Rocket Artillery Battery (two firing platoons with 4x light MLRS 110mm each)
- Rocket Artillery Battery (two firing platoons with 4x light MLRS 110mm each)
- Rocket Artillery Battery (two firing platoons with 4x heavy MLRS 227mm each)
- Rocket Artillery Battery (two firing platoons with 4x heavy MLRS 227mm each)
- attached (peacetime) sports group
e) Artillery Observation Battalion
- Staff Battery
- Artillery Sound Ranging Battery
- Artillery Radar Battery
- Drone Battery (three platoons with 4x CL289 rocket drone system)
Numbers in parentheses behind each line above are manpower, with a prefaced [F] it's different peacetime strength.