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RE: Reviving Imperial Japanese Noob - 8/29/2010 4:18:42 PM   
rattovolante


Posts: 188
Joined: 8/30/2009
From: Italy
Status: offline
The overall SRA plan
Premise: the plan for expansion in the Southern Resource Area was based on the resource/oil overland movement system of patch 1, which was very different and extremely less forgiving than the current one.

In any case, back when I drew up plans I was convinced that:
  • I could not afford shipping out oil and fuel on a large scale until a safe perimeter around the SRA was established (i.e. no reload centers for SSs and DDs).
  • Night level bombing of industrial centers can not be effectively stopped by night CAP or AAA.
  • Since (at least in this game) minefields proved unable to stop surface raiders, the only way I could think to protect a captured Palembang from a surface bombing raid from Batavia appeared to be placing surface units of mine there. This meant placing them for an indefinite amount of time within range of enemy naval search planes, and it is doubtful whether Betties would have been able to adequately protect such a stationary task force from enemy ships (just wait for a thunderstorm...)

Now, I don't know if these points made sense even in patch 1, but well, I had to start from somewhere when planning something out for my first game :)

In any case, flawed strategy or not, I resolved to only capture Palembang after securing or neutralizing both Batavia and Singapore. In turn, this meant that Batavia was actually more important than Singapore, as the Straits of Malacca are interdicted almost from the very start of the game.

Thus, my first “important” objective was Java. Singapore could wait, while the important goal in the Philippines was to deny use of Manila harbor to reload SSs.

I also resolved to take an unusual route to Java, namely through Timor and then landing at Tjiltjap. While the disadvantages of the approach are quite numerous and obvious, the main points were:
  • a very early push to Timor might appear to be focused on Darwin rather than Java, and take my opponent by surprise.
  • if I managed to catch my opponent offguard I might be able to trap enemy tankers or warships in the Java sea and/or Makassar strait
  • this route allowed me to place advance bases in hexes with no oil or relevant industry, so there was no risk of collateral damage (or night bombings on industries, again)
  • finally, landing in Borneo and Sumatra after Java is neutralized, I should not encounter any relevant air or surface threat.


The advance through the Moluccas are (verbosely) reported above, and not much happened in the Philippines or Malaya. Eastern Borneo was to be invaded after Java, just like Sumatra.

So, skipping over the other details, here is how the map looked like on Feb 1st, 1942.
Note how little advance has been made in the resource area, and that Manila, Clark Field, Bataan and Singapore still stand (and are probably entrenching in).






Attachment (1)

< Message edited by rattovolante -- 8/29/2010 4:22:28 PM >

(in reply to rattovolante)
Post #: 91
RE: Reviving Imperial Japanese Noob - 8/29/2010 10:23:46 PM   
rattovolante


Posts: 188
Joined: 8/30/2009
From: Italy
Status: offline
Solomon Islands, Jan 1942
I had noticed that Hartwig tended to react to “obvious” landings with capital ships. So I made a little experiment and diverted to Tulagi the remaining KB carriers (Kaga, Akagi and Hiryu) returning from Kwajalein. I left them cruising between Nauru and Tulagi while sending in a (quite light) landing force to capture the island.
The trick seemed to work, as on Jan 1 carrier planes spotted and sunk CA Louisville, CL Leander and CL Achilles approaching the landing beach at Tulagi :)
After that, allied submarine activity heavily intensified in the Solomon islands over the next weeks. I don't know if they were looking for the carriers, but I lost a xAK at Tulagi on Jan 14, a PB at Rabaul on Jan 16, a xAKL at Tulagi on Jan 20.

West Borneo, Jan 1942
2 Jan: I bombard Singkawang from the sea and land troops. Singkawang is secured the next day. Allies bomb Singkawang from the air in response.

6 January: An allied (bombardment?) TF is engaged by a roughly equal SCTF defending Singkawang:
quote:

Japanese Ships
CA Suzuya
CA Kumano, Shell hits 3, on fire
DD Maikaze
DD Nowaki
DD Arashi, Shell hits 1

Allied Ships
CA Houston, Shell hits 3, on fire
CL Marblehead, Shell hits 2
CL Boise, Shell hits 4
DD Alden, Shell hits 1
DD Edsall
DD Parrott, Shell hits 4, Torpedo hits 1, and is sunk


More Allied air strikes in the following days



On Jan 13 SS Swordfish engages my surface combat TF defending West Borneo, torpedoing CL Jintsu, which has to retreat to Saigon's repair yard.

Sambas is captured on Jan 8, Pontianak on Jan 14, Ketapang on Jan 17

Invasion of Billiton on Jan 18-19 did not go smoothly. A very small allied TF engaged my amphibious TF while it was unloading supply (troops were already ashore). It is notheworthy that being “unloading” seemed to affect warships too, especially CA Suzuya:
quote:

Day Time Surface Combat, near Billiton at 52,93, Range 19,000 Yards

Japanese Ships
CA Suzuya, Shell hits 14
DD Oyashio
DD Maikaze, Shell hits 1, on fire
DD Asashio, Shell hits 1
DD Yugiri
E Tsuta, Shell hits 10, and is sunk
xAKL Miiko Maru, Shell hits 12, heavy fires, heavy damage [will later sink]
xAK Nissen Maru, Shell hits 8, and is sunk

Allied Ships
CL Java, Shell hits 10
CL Tromp
DD Banckert, Shell hits 11, heavy fires, heavy damage


Billiton was captured on Jan 19 by the (now stranded) Japanese troops.

Kuching was invaded overland and captured on Jan 23.

On Jan 23 an ASW TF patrolling Pontianak was wiped out...
quote:

Night Time Surface Combat, near Pontianak at 56,90, Range 11,000 Yards

Japanese Ships
DD Fubuki, Shell hits 9, Torpedo hits 2, and is sunk
DD Yugiri, Shell hits 24, and is sunk
DD Hasu, Shell hits 21, and is sunk
DD Tsuga, Shell hits 18, and is sunk

Allied Ships
CL Tromp
CL Mauritius
CL Glasgow
DD Napier
DD Nestor



< Message edited by rattovolante -- 8/29/2010 11:51:19 PM >

(in reply to rattovolante)
Post #: 92
RE: Reviving Imperial Japanese Noob - 8/29/2010 10:35:57 PM   
rattovolante


Posts: 188
Joined: 8/30/2009
From: Italy
Status: offline
Burma, Jan 1942
Imperial Guards was spotted by a coastal bombardment while on its way to Pegu. The defense stiffened, and we basically stalled. Axis forces are under more or less constant harassment by air and sea, but there is not much I can do :(
The plan to move IGD was based on the release version of the game, when it was a pretty good strategy for the British to evacuate Burma and let the resistance destroy the industry there. Anyway, Hartwig had not evacuated Rangoon, so all IGD could do was to cut off the supply route to China quite early.

Pegu was captured on Jan 7. Toungoo captured Jan 13.

Malaya, Jan 1942
Air combat for the whole month, sporadic in the beginning, then escalating to more organized raids

Combat at Temuloh begins on Jan 5, will last for an entire month. Japanese air strikes on it intensified in the second half of the month, as more axis units arrived – at first I had a single LCU there, just to keep the defenders committed. More Japanese units only arrived from Jan 23, after the plan to cut off central Malaya by landing at Mersing failed.

On Jan 7 I unleash Betties. The result is that 13 Betties engage HDML Pahalwan. Actually, the very first group of planes score a torpedo hit, obliterating the unlucky boat, so the others just fly above the area, failing to find the target (well, duh...). Seemed a little overkill...

Kuala Lumpur falls on 9 January

I land at Mersing on January 10, apparently catching Hartwig off-guard! The base was secured the next day. This seriously threatened to cut off the units in Malacca, so the Allies started to bomb Mersing from the air quite heavily (those Vildebeests carry a quite large load!).

The battle escalates on January 14, when my surface combat TF defending Mersing is engaged by an Allied TF:
quote:

Japanese Ships
CA Mogami, Shell hits 3
CA Mikuma, Shell hits 5, on fire
CL Tama, Shell hits 5, on fire
DD Hagikaze
DD Asagumo, Shell hits 2
DMS W-2, Shell hits 6, and is sunk
DMS W-3, Shell hits 3, on fire
DMS W-5, Shell hits 2, heavy fires
DMS W-6, Shell hits 1

Allied Ships
CA Australia, Shell hits 3
CL Marblehead, Shell hits 6, heavy fires
CL St. Louis, Shell hits 6, on fire
CL Boise, Shell hits 2, on fire
DD John D. Edwards, Shell hits 3, on fire
DD Pope, Shell hits 1, on fire


IJNAF tries to strike the allied TF which in the meantime has reached Singapore. The results sort of confirm my idea that Palembang can't really be defended until Singapore and Batavia are neutralized.
In the morning 18 Zeroes, 36 Nells and 26 Betties only manage to score 1 torpedo hit on Boise (with no “heavy damage” or “on fire” report) and to shoot down 1 Buffalo, moreover losing 1 Zero in the process. Marblehead is anyway reported as “heavy fires, heavy damage” (from the surface action, I suppose).
In the afternoon 15 Zeroes, 22 Betties and 36 Nells shoot down 1 Buffalo and sink a KV, a xAK (loaded with troops!) and a TK.

Note that this is the second time in this game that LBA engage a retreating raiding cruiser TF without being able to stop or at least hinder it (it had happened with the Ambon raid, earlier). So, in short, a Netty umbrella does not seem to me to be an effective deterrent for surface raids - I wonder if I'm the only one to think so, because the consensus appears to be the opposite.

On the same day, the annoying SS Swordfish engages twice the survivors of the battle without results, and a quite largish airstrike (31 bombers) hit Mersing to little effect.

On Jan 15 more harassment by Allied submarines at Mersing, without results.

Jan 16: a torpedo strike by Swordfishes on my two CA defending Mersing fails. Hurricanes show up, though! A IJNAF strike over Malacca fragments and the Betties arriving without escort take heavy losses.

The landing at Mersing was supposed to “scare away” the defenders at Malacca, and in fact this worked. Unfortunately, I messed up with the orders of units pursuing from Malacca and Kuala Lumpur, to the effect that the units at Mersing ended up having to cut off the retreat on their own... which didn't work out. By the time Malacca fell on Jan 22, the allied troops had already withdrawn in the next hex, and the Mersing units were unable to stop them:
quote:

Ground combat at 50,82

Japanese Deliberate attack

Attacking force 4657 troops, 30 guns, 42 vehicles, Assault Value = 165

Defending force 9761 troops, 119 guns, 36 vehicles, Assault Value = 400

Japanese adjusted assault: 68

Allied adjusted defense: 455

Japanese assault odds: 1 to 6

Combat modifiers
Defender: terrain(+), experience(-)
Attacker:

Japanese ground losses:
347 casualties reported
Squads: 1 destroyed, 27 disabled
Non Combat: 1 destroyed, 33 disabled
Engineers: 0 destroyed, 0 disabled
Vehicles lost 5 (0 destroyed, 5 disabled)


Allied ground losses:
186 casualties reported
Squads: 1 destroyed, 22 disabled
Non Combat: 2 destroyed, 26 disabled
Engineers: 0 destroyed, 2 disabled


Assaulting units:
55th Infantry Regiment
22nd Recon Regiment

Defending units:
15th Indian Brigade
3rd SSVF Battalion
27th Australian Brigade
22nd Australian Brigade
6th Indian Brigade
2nd Argylls Battalion
112th RAF Base Force
137/155th Field Regiment


In the next few days, the retreating units were able to reach Johore Bahru :(

Betties raided Rangoon harbor on Jan 20 trying to catch the ships that had been bombarding IGD at Pegu, but only sunk some transports. Anyway, the british cruisers seem to have moved away from the area since then.

< Message edited by rattovolante -- 8/30/2010 12:05:08 AM >

(in reply to rattovolante)
Post #: 93
RE: Reviving Imperial Japanese Noob - 8/29/2010 11:51:09 PM   
rattovolante


Posts: 188
Joined: 8/30/2009
From: Italy
Status: offline
Confirmed allied ship losses up to Jan 31, 1942
Note that only "relevant" ship types are listed, and these are strictly the confirmed losses (meaning stuff "reported to have been sunk" in the joperationsreport_xxxxxx.txt files)
  • 7 BB (Prince of Wales, Nevada, Oklahoma, Tennessee, Pennsylvania, West Virginia, Arizona)
  • 1 BC (Repulse)
  • 3 CA (Canberra, New Orleans, Louisville)
  • 5 CL (Achilles, Adelaide, Danae, Durban, Leander)
  • 25 DD (4 British, 1 Australian, 4 Dutch, 16 USN)
  • 1 DM
  • 1 DMS
  • 4 SS (Trusty, O16, KXI, Sculpin)
  • 5 TK (Strix, Angelina, Gulfhawk, Gertrude Kellogg, Hagood)
  • 2 AO (Trinity, Pecos) + TAN 1 and TAN 2 that are really too small to count
  • 2 AS (Pelias, Canopus)
  • 1 AV (Tangier)
  • 1 AK
  • 1 xAP (President Madison)
  • 8 xAK worth >10 VP


Japanese losses up to Jan 31, 1942
These are both the admitted losses (again as per joperationsreport_xxxxxx.txt) and unadmitted losses, so in theory the list should be larger than the allied one.
I am also listing all ships, not just the "significant" ones.
  • 1 CA: Chokai
  • 3 CL: the entire Katori class
  • 8 DD (3 Fubuki, 1 Kagero, 2 Wakatake, 2 Momi)
  • 3 DMS
  • 1 E: Tsuta
  • 1 SS: I-160 (it reacted into a known minefield in the old days of 6-hex react...)
  • 7 SSX
  • 1 AK
  • 3 APD
  • 5 xAK worth >10 VP
  • 18 other xAK/xAKL
  • 1 AO: Shirya
  • 1 TK: San Clemente Maru (11200 capacity)
  • 1 CM
  • 8 Ansyu xPB
  • 18 other PB/SC/PC
  • 1 ACM

Notes:
I considered Tsuta as warship since whatever its (low) VP value and E "status" may be, it was an extremely good ship for 1942 Japan.
I was disappointed by losing all three Katoris. I know many people don't like them, but IMO they make really good long range raiders or scouts.
Shirya was almost impossible to save in patch 1 with historical start - it arrived alone and loaded with fuel at Midway on turn 1, so it was pretty much guaranteed to be a very flammable target for bombers on turn 2.
The Ansyus are listed separately because for some reason I fail to really underastand they are valued 10 VP each! After I realized that, I withdrew them from service unless absolutely necessary...


Evaluation
So, in the end, the main question is: apart from errors in execution (mostly due to having very little time to play my turns), was I too conservative? (although I should also post air and land losses to judge this)
Will the decision of only capturing oilfields at Miri cost me a lot later?
Or in other words, was the plan just bad from the start?

I really don't know how to judge the naval losses. I am more or less sticking to the historical Japanese plan of a war of attrition until the decisive naval battle (except that I expect the decisive naval battle to be carrier-based, not battleship-based). So I really wished to get a better exchange ratio of capital ships - excluding the ships sunk as a consequence of the historical first turn, the effective exchange ratio has been 1 CA and 3 CL sunk and 1 BB heavily damaged for 2 CA and 3 CL confirmed sunk; there might be more unconfirmed losses but frankly I doubt it.

PS: I had forgotten to paste in the burma/malaya part, so I edited the messages to paste them in. end result is that the SRA part ends up in the wrong place, but anyway...

< Message edited by rattovolante -- 8/30/2010 12:08:31 AM >

(in reply to rattovolante)
Post #: 94
RE: Reviving Imperial Japanese Noob - 8/30/2010 4:49:53 AM   
vicberg

 

Posts: 1176
Joined: 4/19/2008
Status: offline
Looking at ship losses, you are doing great. As Japs, you want to hit the allied combat ships and tankers. You've done both. 40+ allied to 10 of yours. That's a good ratio. Don't know how your air is doing.

The problem right now is that you need to take java. ASAP. It's january and the longer you wait, the more troops and planes he will push into it. Thinking of a defensive circle, Burma -> Malaya -> Java -> Solomons -> Gilberts -> Marshalls is your defensive perimeter. Inside perimeter is Saipan, Iwo Jima, Luzon, Vietnam. These areas need to be captured, forts built, defense troops transferred, mines layed, mine tenders transferred, costal defense guns transferred and/or base forces that upgrade to CDs, airfields built up in order to have a fluid defense that takes time to destroy and causes losses while the allied attacks. You DESPERATELY need java and Samoa for the oil fields in addition to the defensive perimeter.

There are three axis of attack: 1) down from Singapore/Kuching (which assumes Singapore falls...I don't like that because it gives allied player too much time to build fortress java), 2) Balikpan (lvl4 airfield, produces fuel), 3) Kendari.....miri is a drop in the bucket. You do need to pick up the pace. You will lose the AK invasion bonus in May.

(in reply to rattovolante)
Post #: 95
RE: Reviving Imperial Japanese Noob - 8/30/2010 7:25:07 AM   
rattovolante


Posts: 188
Joined: 8/30/2009
From: Italy
Status: offline
well game date is now Feb 22 - I still have to catch up with the AAR

I actually landed on Java on Feb 17. I took the Koepang - Tjiltjap approach. So far it's working decently, although I hoped better - mostly because 2 allied cruisers hastily leaving the area when my carriers showed up stumbled into Soryu, damaged it and escaped :(
On land I have a division at Tjiltjap, another at Semarang and a third one should make landfall this turn at Kragan. First goal is Soerabaja, Batavia appears to be heavily defended. Anyway, I'll try to catch up with the AAR in the next days - apart from the not-entirely-successful outcome in my case the Tjiltjap route to Java might be interesting.

As for the ships... the main problem is that I am doubting that a strategy of attrition before the decisive battle might work. Unless I am mistaken, I am still facing 9 BB (+2 damaged/possibly sunk), 13 CA (+2 damaged/sunk) and 24 CL (+3 damaged/sunk), while I have 8 BB (+2 damaged), 15 CA (+2 damaged) and 13 CL, and in any case Japanese CL really can't be compared with Allied CL in general.

As a side note, WitPTrackerAE reports this:
Naval Summary

              Ships sunk/active:       Sunk          Player
                                   Japan  Allies  Active  Total
                               CV :   0      0       6      16
                              CVL :   0      0       3       5
                              CVE :   0      0       2      10
                            BB/BC :   0      8      10      12
                            CA/CB :   1      4      17      18
                       CL/CLAA/CS :   3      8      20      29
                            DD/DE :   8     29     105     230
                       AM/DMS/YMS :   3     12      17      30
                              APD :   3      0       5      36
                       AV/AVD/AVP :   0      5       8       9
                        CM/DM/CMc :   1      1      35      43
                               AO :   1      4      16      23
                           SS/SST :   1     26      57     221
                              SSX :   7      0       3      89
                      PC/PG/SC/KV :   4      1      57     174
                  AP/xAP/xAPc/APc :   2     12      49      62
      AK/AKV/AKE/AKL/AKA/xAK/XAKL :  24     91     826     1364
           AMC/APA/LSIL/LSIM/LSIS :   0      0      10      11
                            TK/YO :   2      9      63     239
 PT/PB/MGB/PF/YP/TB/MTB/ML/HDML/E :  26     32     186     650
                    Landing craft :   0      0      23     352
                        AS/AD/AGP :   0      4      10      10
                              ACM :   1      1      89      90
                        AR/ARD/AG :   0      5       8      11
                               AE :   0      0       0       0
                              AGC :   0      0       0       0








The insane number of sumbarines sunk is really unlikely. I don't think I even have spotted that many submarines!

< Message edited by rattovolante -- 8/30/2010 7:40:18 AM >

(in reply to vicberg)
Post #: 96
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