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olicana
United Kingdom
Joined 01/02/17
Last Visit 03/03/21
25 Posts
Posted on 03 February 2017 at 14:16:07 GMT
Why do most artillery rules use a drift mechanism?

If someone can give me an answer, beyond 'because most game always have', I'd like to know because, historically speaking, it doesn't miss the zone it's called in on.

True, isolated mortars and the like will probe about a bit before finding the absolute centre point of the target zone, but that is a minute by minute skirmishy thing. Requested battery fire missions directed by FAO don't work that way.

I'm inserting a link that is well worth reading. It is quite a concise 'wargaming' view of what wargamers should be looking to recreate. There are more detailed sources for those who want it, but for most this is 'in a nutshell' artillery tactics for the Brits, Germans, USA, USSR.

LINK: https://www.google.co.uk/url?sa=t&rct=...

It's interesting to note that the fire always lands 'on target zone' and I believe the only reason for artillery drift is dealt with quite brilliantly in the BC2 blunder table for when fire is called on wrong target (the artillery doesn't miss what it was aimed at, the target was misidentified)!

I believe that we should all do away with artillery deviation rules as something misconceived in an ancient wargaming bible, and though scientifically proved wrong, perpetuated in sets of rules ever since. BC2 deals with artillery requests in a brilliant way without this 'bad' rule.

I'm mostly into Brits and Germans in the Western Desert Theatre 1941. This is what I'm going to do:

1. The Germans should be only allowed barrages (square / rectangular templates) as part of scheduled fire.

2. German FAO (Forward Artillery Observer) should have a low Command Value (CV) to simulate the time it took to work out firing solutions for impromptu concentrations. Probably 6.

3.German Infantry Division FAO should not have radios - they are positional (static) with a telephone.

4. The British should only be allowed concentrations (circular template) as part of scheduled fire.

5. British FAO should have a high rating for CV to simulate the speed they could deliver impromptu barrages - probably 8/9.

6. The British (and Germans?), as part of scheduled fire, should be allowed to drop battalion barrages (rectangular templates, usually two or three 'squares' wide) on top of each other - a heavy barrage delivered by several battalion (British regiment) strength units on short section of front - a 'divisional barrage'.

It is interesting to note that scheduled fire never misses in BC2. I find that funny, as it would have been 'ranged in' in exactly the same way as impromptu fire. The only difference is that the firing solutions would have been stored for use later.

Cross posted to House Rules. I hope it is food for thought, at least.

James
olicana
United Kingdom
Joined 01/02/17
Last Visit 03/03/21
25 Posts
Posted on 03 February 2017 at 14:59:20 GMT
Typo -

2. German FAO (Forward Artillery Observer) should have a low Command Value (CV) to simulate the time it took to work out firing solutions for impromptu concentrations. Probably 7.
Dr Dave
Wales
Joined 08/10/07
Last Visit 04/11/19
936 Posts
Posted on 09 February 2017 at 09:23:14 GMT
James,

In BKCII Pete acknowledged that the fire templates are too large – he gives alternative (more accurate?) sizes in the optional rules section, also suggesting that artillery might always cause suppression? I think that’s very harsh. There was a “test” in ’42 I think, in the UK. They drove a sqn of Churchills through a barrage of 25pdr fire. They all went straight through – no one was stopped due to “suppression”.

The one thing I do HATE in BKC is the idea that that a SP battery gets a -1 on the request because they are more mobile (?) and so are faster to come into action. This assumes that artillery is always on the move and never ready and waiting - this is daft - the FAO wouldn't call on a battery that wasn't ready to fire! A regt of 25pdrs deployed in a field are just as fat to respond as a regiment of Sextons deployed and waiting. I think Pete admitted that this was done simply to differentiate between SP and towed arty in the indirect role. The edge SP guns have is that they are armoured - and so more robust against CB fire.

In BKCII arty is either pre-planned via the purchase of assets or it is requested in the command phase. As you say, the former never deviates while the latter does – the “impromptu” type you discuss and in your link.

Impromptu fire does deviate – due to several factors – most commonly getting the fire solution wrong (wrong report from the FAO or an error on the part of the battery) but also weather – all atmospheric conditions affect long range fire. I admit that deviation can be a long way and where BKC could be improved is by reducing the deviation dice by one per shoot called in on the same location. The other point is that the FAO, if he’s up front, can get it very close indeed. 2d6 deviation (FAO is up to 40cm away) seems reasonable with a 20 cm template?

In our games we never bother with the barrage template – everyone fires concentrations and stacks the shoots to kill the target. The square vs round template never seems to bother anyone. In reality it should probably be an ellipse anyway, with the long axis along the direction of fire.

I think of the arty support as being available to my forces on table, but also to the rest of the division. Hence they’re not waiting for just my FAO to call, but other FAOs elsewhere – but not on my table. I have access, but not exclusive use. So when I fail a role it’s because the comms have failed OR the artillery is busy firing in support of someone else?

Modern arty is certainly faster (thanks to computers / GPS etc) and more accurate. In the 80’s the British army claimed first shots within 50m of the target, but I’m not sure over what range.

Dealing with a few of your suggestions:

2. German FAO (Forward Artillery Observer) should have a low Command Value (CV) to simulate the time it took to work out firing solutions for impromptu concentrations. Probably 7.
- But this problem is the same for the British artillery as well. The reason why the British have lower CVs for the FAO is primarily due to the lack of dedicated support. Prior to June ’42 the Brits are bedevilled by a lack of decent AT guns. Hence 25 pdrs are often deployed in the AT direct fire role. In this mode they are not available for the indirect support. Hence the FAO's have smaller pool of guns to call on for indirect fire.


3.German Infantry Division FAO should not have radios - they are positional (static) with a telephone.
- I’m not sure how you’ve arrived at that. FAO’s in a Pz Div do have radios. How long is the telephone line, certainly not more than 1 km? This sounds more like defensive arty deployed on the coast for direct fire or some static position. If you are gaming North Africa this doesn’t apply anyway, since there are no German “infantry” divisions as described in the link anyway?

It is interesting to note that scheduled fire never misses in BC2. I find that funny, as it would have been 'ranged in' in exactly the same way as impromptu fire. The only difference is that the firing solutions would have been stored for use later.
- Not really. The scheduled fire is all preplanned. For the British the FAO would give a single word and then all the guns would come on to fire at that point. There’s a book, “Hill 112”, with a chapter called “Duchess, Dorothy and Dainty” – the 3 divisional level defensive fire targets – all pre-ranged / zeroed in. The impromptu shoot is a new target, not on the list; hence the fire solution needs to be worked out from scratch. This would apply to all nations.

One thing I will use in the reduce deviation by one die per turn requested at the SAME POINT in successive turns.

Just my 10p!
Huh?
toxicpixie
United Kingdom
Joined 09/03/11
Last Visit 17/07/21
2178 Posts
Posted on 10 February 2017 at 13:40:06 GMT
"It is interesting to note that scheduled fire never misses in BC2. I find that funny, as it would have been 'ranged in' in exactly the same way as impromptu fire. The only difference is that the firing solutions would have been stored for use later.
- Not really. The scheduled fire is all preplanned. For the British the FAO would give a single word and then all the guns would come on to fire at that point. There’s a book, “Hill 112”, with a chapter called “Duchess, Dorothy and Dainty” – the 3 divisional level defensive fire targets – all pre-ranged / zeroed in. The impromptu shoot is a new target, not on the list; hence the fire solution needs to be worked out from scratch. This would apply to all nations. "

German firing solutions for non-pre worked out approaches average about fifteen minutes to get rounds on target. Their approach was essentially updated WW1 style with three reference points - firer, target, FAO, and needed to work out the rleationship between each.

UK/US junked that, sorted an improved solution requiring only two points of reference (target and gun? I did have a link to a really good break down for this...), and took virtually no time at all.

The UK/Commonwealth arty could drop huge amounts of fire in under a minute or two, if required, with minimal accuracy loss. The Americans were slightly slower due to routing fire throu the FDC, but slightly more accurate.

This isn't the indepth link I was thinking about, which I can't find, but it looks pretty robust - http://balagan.info/artillery-and-mortar-t...
toxicpixie
United Kingdom
Joined 09/03/11
Last Visit 17/07/21
2178 Posts
Posted on 10 February 2017 at 14:34:19 GMT
Ofc the above is only really very relevant from mid-late '42 onwards - prior to that Commonwealth arty was simply not able to get everything meshed together.

Things like guns being used in the direct fire AT role as Dr Dave suggests, an insistence on parcelling the batteries out in individual support or as part of "Jock Columns", lack of confident and well drilled/trained FO's able to demand fire and override whatever local officer or base-wallah decided, not enough guns/crews/ammo etc etc.

All the component parts of the lethally effective mid to late war Royal Artillery system are there, but they just don't/can't quite work together as yet Smile
ColCampbell
United States
Joined 13/01/17
Last Visit 25/02/17
15 Posts
Posted on 11 February 2017 at 17:44:16 GMT
From my limited reading, I tend to agree with James on the challenge of on-board requesting of artillery. Since our group is playing in the North African desert prior to El Alamein and Montgomery, I think that we'll dispense with the deviation use din BKC II and also we'll use the smaller templates.

It appears (again from my limited reading) to me that the DAK was more effective in employing divisional artillery on both a pre-planned and as-requested basis while the 8th Army wasn't. As toxiepixie explained, the British insistence on parceling out their batteries, on using them as AT guns, and not having a dedicated brigade or division level CRA limited their ability as indirect fire assets. The Germans, on the other hand, seemed to have a dedicated divisional artillery commander who could concentrate all of the divisional (and even corps) artillery assets when needed.

Anyway, just my nickel's worth.

Jim
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