US Army Organisation in WW2

The Devil's Brigade

  3 Regiments [600 men each]

    2 Battalions [300 men each]

      3 Companies [100 men each]

        Company Headquarters Platoon [14 men]

        3 Platoons [27 men each]

          Headquarters Section [1 man]

          First Section [13 men]
            1 x Bren LMG
            1 x Bazooka

          Second Section [13 men]
            1 x Bren LMG
            1 x M19 60mm Light Mortar

  Support Battalion [600 men]

American Paratrooper Company (1944-45)

  Headquarters

  3 Rifle Platoons

    Headquarters
      2 x .30 cal LMG
      1 x Bazooka

    3 Rifle Squads
      1 x BAR
      9 x M1 Rifle
      2 x .30 cal Carbine or .45 cal SMG

    Mortar Section
      1 x 60mm Light Mortar

1944-45 Variation

  Any Squad
    1 x BAR
    3 x .45 cal SMG
    2 x .30 cal Carbine or .45 cal SMG
    6 x M1 Rifle

456th Parachute Artillery

  Battalion Headquarters

    Signals

    Supply

    Maintenance

    Security
      2 x .30 cal HMG
      2 x 1.5-Ton Truck

  AT Gun Platoon
    4 x 37mm AT Gun
    4 x Jeep

  3 Artillery Batteries

    2 Artillery Sections
      2 x 75mm Pack Howitzer
      2 x Jeep

Recon Company, 81st Recon Battalion

  Armored Car Platoon
    3 x M8 Armored Car
    3 x Jeep (MG)
    3 x M19 60mm MTR
    3 x Jeep

  Light Tank Platoon
    5 x M5A1 Light Tank

American Rifle Company (1944-45)

  Headquarters

  3 Rifle Platoons

    Headquarters

    3 Rifle Squads
      10 x M1 Rifle
      1 x BAR
      1 x 1903 Springfield Rifle or M1 Garand

  Heavy Weapons Platoon

    Headquarters

    Bazooka Squad

      3 Bazooka Sections
        1 x Bazooka

    LMG Squad

      2 LMG Sections
        1 x .30 cal LMG

    Mortar Squad

      3 Mortar Sections
        1 x 60mm Light Mortar

    HMG Section
      1 x .50 cal HMG

1945 Variation

  Any Squad
    10 x M1 Rifle
    2 x BAR

1944-45 Variation

  Any Squad
    9 x M1 Rifle
    1 x BAR
    1 x .45 cal SMG or .30 cal Carbine

2nd Marine Raiders

HQ Company

6 Companies

   CHQ
      60mm mort. (or possibly 81mm mort)

   2 Platoons
      PHQ: Lieutenant

      3 Squads: squad leader(Thompson SMG)
                1 BAR
                1 M1 Garand
                1 Thompson SMG