I wonder if anyone ever considered that giving another OKW commander a howitzer is bad idea?
Allies already facing LeFH spam in every single game in team games, forcing everyone on ally side pick doctrines with Sexton/Priest all the time or facing no-brain counterbarrage spam.
Why exactly OKW has doctrines to cover up for their faction supposed weakness, while Brits still lack docrines with mobile mortars/mortar halftracks/pack howies and such?
Actually about that, I just tested out the Royal Artillery and I stand by my opinion against Early Warning and Perimeter Overwatch but with fresh experience now I got a couple of suggestions for that.
First off, Early Warning, it's a 30 ammo ability that is basically map hax, add to that the fact that this commander will be mostly used in Team games like someone else pointed out already and you have your reasons for why it should be replaced.
It's either useless, because your teammates can provide you with sight already, or even a bit too good, for again, 30 munitions, on top of that you have 3 more munition based abilities and this doctrine becomes a huge ammo sink.
I suggest a few things to replace it:
A Mortar team, 25 pounder emplacement (probably not gonna happen but what the hell, I'll write it down), or as Kirrik said the M21 Mortar Halftrack, this would not be out of place because of the large amount of lend-lease the British received from America and would provide another manpower and fuel based option which you will probably need and make use of more than another ammo costing ability.
Concentration Barrage - Nothing wrong here, if the 25 pounder emplacement is added this ability can become a bit more dynamic in that it will increase it's price based on how many 25 pounders there are on the field, for example you already have the 2 base ones for 100 ammo, that would be the base price, every additional 25 pounder would be like 25, 30 or 50 ammo on top of that and so forth.
Valentine - By itself it still feels underwhelming, combined with the Sexton(s) tho (which you will probably field in large enough effective numbers only in team games) it's a nice combination, especially with it's Sexton Victory target mark or whatever it's called, I'm not even sure if it costs ammo.
My suggestion for the Val would be to be able to capture, like the Soviet tanks at Vet 1, I got the idea while using it for some reason, probably because it was given to the Soviets as lend-lease.
As for the Sexton victor target, maybe it should be like the CoH's Captain Victor Target which included all available indirect fire units, that included mortar pits, 25 pounder emplacements and the Priest, just slap on an ammo price tag on it (if it doesn't have one already, if so increase it) and make it a vet requiring ability and I think it will be balanced, I
think.
Sexton - Feels good and actually useful now, combined with with the Valentine and at Vet 2 and it can lay down a constant barrage, but still needs to be fielded in numbers if it's going to be effective, which will only happen in team games.
Perimeter Overwatch - Large ineffective munitions sink in my opinion, again there are only 2 base 25 pounder howitzers covering your entire territory, the enemy can just bait them to fire at an infantry unit while they move in tanks, and again, it's the 4th or 5th ammunition ability in the doctrine, besides the Early Warning which is 30 ammo, Concentration Barrage which is 100, Sexton Creeping barrage which is 50 or 100 I don't remember right now, plus if the Valentine's Sexton Victor target has a price as well and it is 225 ammo that's a lot of ammo abilities.
What I suggest is replacing it with a plain Overwatch passive ability for Sextons, and the base 25 pounders (and if added, for the 25 pounder emplacements) which will work the same way as the Advanced Emplacements Counter-Battery fire.
Or something else that also passively improves mortars as well and doesn't cost munitions.
It is only now that I also realize why people go this commander alongside Mobile Assault and before Tactical Support, because of their indirect fire options they give to the British, this is how much a mobile indirect fire unit such as a mortar is needed I believe, and adding it through this doctrine as well as Tactical Support with their air supply operation would be basically a god send for the Army.