Everyone hates on this doctrine, so for a while Ive ignored it, yet it keeps niggling in the back of my head.. and Ive been playing with it recently vs Ost, and I love it.
Ok so maybe the sexton isnt great? Dont build it then.
The recon arty can certainly be useful, especially for spotting for arty.
The main ability of this commander is the co-ordinated barrage, for 100 muni. Now I know an upgraded IS can drop the flare for this (for cheaper), but that requires them being in position, and bloody close too. And you lose healing on that squad. The sniper can also do it, a bit further a away (and at vet 1), but again that requires positioning, keeping sniper alive and at vet 1.
Having the arty drop wherever you want it for 100 muni, is really good. Brits can struggle vs static positions, and the combined arms nature of Brits and Ost, often leads to a big stand off which arty can really smash.
I also like strats that are not very meta, because people dont expect a crap load of arty raining on their head
At 100 muni, its quite spammable.
I rarely get the Valentine, if I did, it would only be for the scanning ability, so would depend on a super defensive opponent.
The overwatch arty, is good, but situational, depends if you have a whole side of the map where enemy is pushing. But you do need sight for shells to land.. but its quite expensive, so I dont use it much.
Never automatically go royal arty, I keep my options open, my main other go to vs Ost is Royal Engineers, having a command bren is good, the repairs come in handy in different situations and given the right map, the AVRE can be a complete game changer, especially if the enemy gifts me a PAK so its easy to have plenty of AT.
But as soon as the enemy starts digging in MGs, building pak43s, or Howies, or spamming support weapons, having the arty on hand is godly.