2012年2月22日水曜日

ラングーン戦、決着つかず


だいぶ前からラングーン市街で英軍部隊を包囲しています。連日の砲撃と時々の爆撃で痛めつけ、そろそろかなと思い、昭和17年4月12日にDeliberate attackをしかけました。日本側は兵員65092名、砲792門、車輛298台に対して、英軍は兵員35209人、砲310門、車輛571台と、兵員と砲は2倍の優勢です。ラングーンは都市で防御側が有利な修正を受けることができます。また英軍は毎日チッタゴンからB-17や輸送機でせっせとラングーンにサプライを空中投下していますが、包囲下の英軍はサプライ不足を来していて、修正odds比は3対1と日本側の優勢となりました。これですんなり殲滅できればいいのですが、結果は日本側の死傷者2589名、英軍側1132名と日本側が2倍の被害を受けてしまいました。ラングーンの英軍部隊を殲滅できるのはまだだいぶ先のようです。
陸戦の勝利と敗北を決定するのはAVですが、陸戦での被害を決める大きな要因は、戦闘に参加している部隊を構成するdevice(歩兵分隊・各種砲・戦車など)のAnti-Soft値とAnti-Armor値だと言われています。英軍の車輛にはかなりの数の戦車が含まれていて、日本側のdeviceにはこれを打ち破るだけのAnti-Armor値がないのかもしれません。また今の時期は日英の歩兵分隊のAnti-Soft値は同じくらいなので、防御側がかなりへたばらない限り、攻撃側の方の被害が大きくなるのはやむを得ないところなのでしょう。destroyedになった歩兵分隊の数が英軍より少なかったのがわずかな希望です。

Promeにいる英18師団の包囲も狙っているのですが、今日から撤退を始めていました。捕捉できるかどうかは不明ですし、捕捉できても殲滅にはかなり手間取りそう。それと、ベンガル湾には明日アキャブを艦砲射撃する予定の2つのTFが進撃中です。ちょっと考えるところあって、二つに分けてみました。結果が楽しみ。

ルーガンビルの西南のヘクスには今日も連合軍TFの存在が報告されています。しかし、今日もルンガの陸攻・大艇ともに攻撃してくれませんでした。そうなるかもと思って、ツラギから駆逐艦をこのヘクスのパトロールに派遣したのですが、こちらも攻撃してくれません。運が悪いだけなのか、それともEscort TFは攻撃に対してimmuneなのか。この海域はヌーメアのB-26の攻撃圏内なので、駆逐艦といえども長居はさせたくないんですけどね。

AFTER ACTION REPORTS FOR Apr 12, 42
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ASW attack near Ketapang  at 54,95

Japanese Ships
      PB Showa Maru #5

Allied Ships
      SS Stingray



SS Stingray is sighted by escort
Stingray bottoming out ....
PB Showa Maru #5 fails to find sub, continues to search...
PB Showa Maru #5 fails to find sub, continues to search...
PB Showa Maru #5 fails to find sub, continues to search...
PB Showa Maru #5 fails to find sub, continues to search...
PB Showa Maru #5 fails to find sub, continues to search...
Escort abandons search for sub


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ASW attack near Donggala  at 69,96

Japanese Ships
      TB Hayabusa

Allied Ships
      SS KX



SS KX launches 4 torpedoes at TB Hayabusa
KX diving deep ....
TB Hayabusa fails to find sub, continues to search...
TB Hayabusa fails to find sub, continues to search...
TB Hayabusa fails to find sub, continues to search...
TB Hayabusa fails to find sub, continues to search...
TB Hayabusa fails to find sub, continues to search...
Escort abandons search for sub


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ASW attack near Newcastle  at 93,167

Japanese Ships
      SS RO-63

Allied Ships
      AM Wollongong



SS RO-63 is sighted by escort
RO-63 diving deep ....
AM Wollongong fails to find sub, continues to search...
AM Wollongong fails to find sub, continues to search...
AM Wollongong fails to find sub, continues to search...
Escort abandons search for sub


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Morning Air attack on Clark Field , at 79,76 

Weather in hex: Thunderstorms

Raid detected at 78 NM, estimated altitude 8,000 feet.
Estimated time to target is 22 minutes

Japanese aircraft
      Ki-21-IIa Sally x 37



Japanese aircraft losses
      Ki-21-IIa Sally: 2 damaged


Allied ground losses:
      21 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 0 destroyed, 3 disabled
         Engineers: 0 destroyed, 1 disabled


Airbase hits 8
Runway hits 18

Aircraft Attacking:
      17 x Ki-21-IIa Sally bombing from 6000 feet
               Airfield Attack:  4 x 250 kg GP Bomb
      20 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb

Also attacking 11th PA Infantry Division ...
Also attacking Clark Field  ...
Also attacking 31st PA Infantry Division ...
Also attacking Clark Field  ...
Also attacking USAFFE  ...
Also attacking 21st PA Infantry Division ...
Also attacking Clark Field  ...
Also attacking 51st PA Infantry Division ...
Also attacking Clark Field  ...
Also attacking Asiatic Fleet  ...


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Morning Air attack on Batavia , at 49,98 

Weather in hex: Severe storms

Raid detected at 40 NM, estimated altitude 9,000 feet.
Estimated time to target is 11 minutes

Japanese aircraft
      Ki-21-IIa Sally x 18
      Ki-43-Ic Oscar x 13
      Ki-48-Ib Lily x 20



Japanese aircraft losses
      Ki-21-IIa Sally: 9 damaged
      Ki-21-IIa Sally: 1 destroyed by flak
      Ki-48-Ib Lily: 4 damaged
      Ki-48-Ib Lily: 1 destroyed by flak


Allied ground losses:
      16 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 0 destroyed, 2 disabled
         Engineers: 0 destroyed, 0 disabled


Airbase supply hits 1
Runway hits 5

Aircraft Attacking:
      18 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      19 x Ki-48-Ib Lily bombing from 6000 feet * 
               Airfield Attack:  2 x 100 kg GP Bomb

Also attacking KNIL Army Command  ...
Also attacking Batavia  ...
Also attacking KNIL Army Command  ...
Also attacking Batavia  ...
Also attacking KNIL Army Command  ...
Also attacking Batavia  ...
Also attacking KNIL Army Command  ...
Also attacking Batavia  ...
Also attacking KNIL Army Command  ...
Also attacking Batavia  ...


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Morning Air attack on Katherine , at 76,128 

Weather in hex: Severe storms

Raid spotted at 38 NM, estimated altitude 11,000 feet.
Estimated time to target is 10 minutes

Japanese aircraft
      Ki-21-IIa Sally x 8
      Ki-43-Ic Oscar x 11



No Japanese losses



Aircraft Attacking:
       8 x Ki-21-IIa Sally bombing from 6000 feet * 
               Airfield Attack:  2 x 250 kg GP Bomb



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Morning Air attack on 14th Chinese Base Force, at 81,57 (Kanhsien)

Weather in hex: Heavy cloud

Raid spotted at 20 NM, estimated altitude 9,000 feet.
Estimated time to target is 5 minutes

Japanese aircraft
      Ki-21-IIa Sally x 18



Japanese aircraft losses
      Ki-21-IIa Sally: 1 damaged


Allied ground losses:
      116 casualties reported
         Squads: 0 destroyed, 7 disabled
         Non Combat: 1 destroyed, 11 disabled
         Engineers: 0 destroyed, 0 disabled


Aircraft Attacking:
      18 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb

Also attacking 100th Chinese Corps ...
Also attacking 14th Chinese Base Force ...


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Morning Air attack on Burma Corps , at 54,53 (Rangoon)

Weather in hex: Clear sky

Raid spotted at 20 NM, estimated altitude 8,000 feet.
Estimated time to target is 5 minutes

Japanese aircraft
      Ki-21-IIa Sally x 53
      Ki-43-Ic Oscar x 30



Japanese aircraft losses
      Ki-21-IIa Sally: 19 damaged


Allied ground losses:
      230 casualties reported
         Squads: 0 destroyed, 8 disabled
         Non Combat: 2 destroyed, 35 disabled
         Engineers: 0 destroyed, 1 disabled


Aircraft Attacking:
      16 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      15 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb
      22 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb

Also attacking 48th Gurkha Brigade ...
Also attacking 46th Indian Brigade ...
Also attacking Burma Corps  ...
Also attacking 48th Gurkha Brigade ...
Also attacking Burma Corps  ...
Also attacking 48th Gurkha Brigade ...


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Morning Air attack on 45th Indian Brigade, at 54,53 (Rangoon)

Weather in hex: Clear sky

Raid spotted at 13 NM, estimated altitude 11,000 feet.
Estimated time to target is 3 minutes

Japanese aircraft
      Ki-21-IIa Sally x 19
      Ki-43-Ic Oscar x 27



Japanese aircraft losses
      Ki-21-IIa Sally: 4 damaged


Allied ground losses:
      108 casualties reported
         Squads: 1 destroyed, 5 disabled
         Non Combat: 0 destroyed, 17 disabled
         Engineers: 4 destroyed, 0 disabled
      Guns lost 1 (1 destroyed, 0 disabled)


Aircraft Attacking:
      19 x Ki-21-IIa Sally bombing from 6000 feet
               Ground Attack:  4 x 250 kg GP Bomb



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Afternoon Air attack on Derby , at 64,127 

Weather in hex: Heavy rain

Raid spotted at 18 NM, estimated altitude 12,000 feet.
Estimated time to target is 6 minutes

Japanese aircraft
      A6M2 Zero x 15
      G3M2 Nell x 9
      G4M1 Betty x 24



Allied aircraft
      no flights

Japanese aircraft losses
      G4M1 Betty: 1 damaged

Allied aircraft losses
      Wirraway: 1 destroyed on ground


Allied ground losses:
      5 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 0 destroyed, 1 disabled
         Engineers: 0 destroyed, 0 disabled


Airbase hits 14
Airbase supply hits 5
Runway hits 48

Aircraft Attacking:
      15 x G4M1 Betty bombing from 6000 feet
               Airfield Attack:  2 x 250 kg GP Bomb,  4 x 60 kg GP Bomb
       9 x G4M1 Betty bombing from 6000 feet
               Airfield Attack:  2 x 250 kg GP Bomb,  4 x 60 kg GP Bomb
       9 x G3M2 Nell bombing from 6000 feet
               Airfield Attack:  2 x 250 kg GP Bomb,  4 x 60 kg GP Bomb



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Ground combat at Rangoon (54,53)

Japanese Deliberate attack

Attacking force 65092 troops, 792 guns, 298 vehicles, Assault Value = 2136

Defending force 35209 troops, 310 guns, 571 vehicles, Assault Value = 811

Japanese adjusted assault: 1237 

Allied adjusted defense: 311 

Japanese assault odds: 3 to 1 

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

Japanese ground losses:
      2589 casualties reported
         Squads: 7 destroyed, 231 disabled
         Non Combat: 1 destroyed, 10 disabled
         Engineers: 2 destroyed, 25 disabled
      Guns lost 36 (1 destroyed, 35 disabled)


Allied ground losses:
      1132 casualties reported
         Squads: 27 destroyed, 127 disabled
         Non Combat: 1 destroyed, 35 disabled
         Engineers: 2 destroyed, 9 disabled
      Guns lost 8 (1 destroyed, 7 disabled)


Assaulting units:
    21st Division
    33rd Division
    1st Raiding Regiment
    1st Division
    20th Division
    2nd Division
    17th Medium Field Artillery Regiment
    41st JAAF AF Bn 
    21st Medium Field Artillery Battalion
    3rd Ind. Mountain Gun Regiment
    43rd Const Co 
    15th Army
    25th Army
    5th Field Artillery Regiment
    8th RF Gun Battalion
    15th JAAF Base Force
    20th Ind. Engineer Regiment
    1st Hvy.Artillery Regiment
    44th JNAF AF Unit 
    8th JNAF AF Unit 
    85th JAAF AF Bn 
    1st RF Gun Battalion
    46th JNAF AF Unit 
    8th JNAF Coy 
    18th JAAF Base Force
    5th Air Division
    36th Field AA Battalion
    9th Base Force
    55th Mountain Gun Regiment
    97th JAAF AF Bn 

Defending units:
    1st Burma Division
    46th Indian Brigade
    6th Australian Division
    45th Indian Brigade
    16th Indian Brigade
    44th Indian Brigade
    48th Gurkha Brigade
    Burma Corps 
    4th Burma Rifles Battalion
    7th Hussars Regiment


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Ground combat at Nanyang (85,45)

Japanese Bombardment attack

Attacking force 57289 troops, 515 guns, 143 vehicles, Assault Value = 2050

Defending force 181897 troops, 892 guns, 0 vehicles, Assault Value = 5782


Allied ground losses:
      25 casualties reported
         Squads: 0 destroyed, 3 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled


Assaulting units:
    13th Ind.Mixed Brigade
    110th Division
    37th Division
    35th Division
    32nd Division
    12th Army
    6th Medium Field Artillery Regiment
    11th Field Artillery Regiment

Defending units:
    120th Red Chinese Division
    30th Chinese Corps
    19th Chinese Corps
    90th Chinese Corps
    61st Chinese Corps
    57th Chinese Corps
    36th Chinese Corps
    33rd Chinese Corps
    92nd Chinese Corps
    17th Chinese Corps
    43rd Chinese Corps
    76th Chinese Corps
    23rd Chinese Corps
    3rd Chinese Corps
    82nd Chinese Corps
    41st Chinese Corps
    1st Chinese Corps
    42nd Chinese Corps
    34th Separate Brigade
    16th Chinese Corps
    55th Chinese Corps
    47th Chinese Corps
    77th Chinese Corps
    96th Chinese Corps
    115th Red Chinese Division
    4th Chinese Cavalry Corps
    18th Group Army
    4th Group Army
    22nd Group Army
    6th Group Army
    19th Chinese Base Force
    2nd Group Army
    7th Group Army
    8th Group Army
    Red Chinese Army
    5th War Area 
    34th Group Army
    4th Construction Regiment


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Ground combat at Clark Field (79,76)

Japanese Bombardment attack

Attacking force 14892 troops, 226 guns, 133 vehicles, Assault Value = 610

Defending force 42734 troops, 650 guns, 685 vehicles, Assault Value = 704


Allied ground losses:
      13 casualties reported
         Squads: 1 destroyed, 0 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled


Assaulting units:
    9th Infantry Regiment
    16th Engineer Regiment
    20th Infantry Regiment
    48th Division
    I./33rd Inf Regt 
    15th Ind.Art.Mortar Battalion
    9th Ind.Hvy.Art. Battalion
    8th Medium Field Artillery Regiment
    14th Army
    1st Medium Field Artillery Regiment
    2nd Ind.Art.Mortar Battalion

Defending units:
    91st PA Infantry Division
    51st PA Infantry Division
    41st PA Infantry Division
    194th Tank Battalion
    31st PA Infantry Division
    71st PA Infantry Division
    21st PA Infantry Division
    192nd Tank Battalion
    11th PA Infantry Division
    4th Marine Regiment
    31st Infantry Regiment
    II Philippine Corps Corps
    PAF Aviation 
    Far East USAAF 
    26th PS Cavalry Regiment
    88th PS Field Artillery Regiment
    USAFFE 
    200th & 515th Coast AA Regiment
    Clark Field USAAF Base Force
    1st PA Constabulary Regiment
    301st Construction Battalion
    Provisional GMC Grp 
    Subic Bay Defenses 
    Cavite USN Base Force
    14th PS Engineer Regiment
    I Philippine Corps Corps
    2nd PA Constabulary Regiment
    57th PS Infantry Regimental Combat Team
    Asiatic Fleet 
    86th PS Coastal Artillery Battalion
    1st PI Base Force
    Manila USAAF Base Force
    301st PA Field Artillery Regiment


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Ground combat at Sibolga (44,79)

Japanese Deliberate attack

Attacking force 5619 troops, 52 guns, 0 vehicles, Assault Value = 155

Defending force 510 troops, 6 guns, 0 vehicles, Assault Value = 13

Japanese adjusted assault: 123 

Allied adjusted defense: 1 

Japanese assault odds: 123 to 1 (fort level 1) 

Japanese forces CAPTURE Sibolga !!!

Combat modifiers
Defender: terrain(+), preparation(-), fatigue(-), morale(-)
 experience(-), supply(-)
Attacker: 

Japanese ground losses:
      14 casualties reported
         Squads: 0 destroyed, 1 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled


Allied ground losses:
      155 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 11 destroyed, 2 disabled
         Engineers: 0 destroyed, 0 disabled
      Guns lost 1 (1 destroyed, 0 disabled)
      Units retreated 7
      Units destroyed 2


Defeated Allied Units Retreating!

Assaulting units:
    11th Infantry Regiment
    42nd Infantry Regiment

Defending units:
    Bengkalis Base Force
    Langsa Base Force
    Medan Base Force
    Sabang Base Force
    2nd Garrison Battalion
    Van Aaran Garrison Battalion
    Medan Garrison Battalion
    Sabang Garrison Battalion
    Padang Base Force


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Ground combat at Batavia (49,98)

Japanese Bombardment attack

Attacking force 4086 troops, 80 guns, 24 vehicles, Assault Value = 904

Defending force 21193 troops, 296 guns, 77 vehicles, Assault Value = 439

Japanese ground losses:
      16 casualties reported
         Squads: 0 destroyed, 2 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled


Allied ground losses:
      10 casualties reported
         Squads: 0 destroyed, 1 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 0 disabled
      Vehicles lost 1 (1 destroyed, 0 disabled)


Assaulting units:
    65th Brigade
    146th Infantry Regiment
    8th Tank Regiment
    5th Recon Regiment
    6th Tank Regiment
    4th Division
    143rd Infantry Regiment
    16th Naval Guard Unit
    16th Army
    56th Field Artillery Regiment
    3rd Medium Field Artillery Regiment

Defending units:
    1st Regt Cavalerie 
    2nd KNIL Regiment
    Batavia Coastal Gun Battalion
    Roodenburg Battalion
    1st KNIL Regiment
    1st KNIL Landstorm Battalion
    4th KNIL Regiment
    Timor Garrison Battalion
    3rd KNIL AA Battalion
    1st KNIL AA Battalion
    2nd KNIL AA Battalion
    ABDA 
    4th KNIL Landstorm Battalion
    Semarang Base Force
    KNIL Army Command 
    ML-KNIL 
    Batavia Base Force


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Ground combat at 56,91 (near Pontianak)

Japanese Deliberate attack

Attacking force 388 troops, 2 guns, 0 vehicles, Assault Value = 17

Defending force 54 troops, 0 guns, 0 vehicles, Assault Value = 1

Japanese adjusted assault: 5 

Allied adjusted defense: 1 

Japanese assault odds: 5 to 1 

Combat modifiers
Defender: terrain(+), leaders(-), fatigue(-), morale(-), supply(-)
Attacker: leaders(-), fatigue(-)


Allied ground losses:
      16 casualties reported
         Squads: 0 destroyed, 0 disabled
         Non Combat: 0 destroyed, 2 disabled
         Engineers: 0 destroyed, 0 disabled


Assaulting units:
    1st Indpt SNLF Coy 

Defending units:
    2/15 Punjab Battalion


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Ground combat at Shaoyang (80,52)

Allied Deliberate attack

Attacking force 48923 troops, 318 guns, 0 vehicles, Assault Value = 1480

Defending force 9520 troops, 122 guns, 0 vehicles, Assault Value = 72

Allied adjusted assault: 197 

Japanese adjusted defense: 24 

Allied assault odds: 8 to 1 

Combat modifiers
Defender: leaders(+), disruption(-), preparation(-), fatigue(-)
 supply(-)
Attacker: disruption(-)

Japanese ground losses:
      1169 casualties reported
         Squads: 33 destroyed, 34 disabled
         Non Combat: 0 destroyed, 7 disabled
         Engineers: 0 destroyed, 8 disabled
      Guns lost 10 (1 destroyed, 9 disabled)


Allied ground losses:
      155 casualties reported
         Squads: 1 destroyed, 18 disabled
         Non Combat: 0 destroyed, 0 disabled
         Engineers: 0 destroyed, 1 disabled


Assaulting units:
    46th Chinese Corps
    79th Chinese Corps
    14th Chinese Corps
    4th Chinese Corps
    25th Chinese Corps
    1st Chinese Cavalry Corps

Defending units:
    3rd Division



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