OB (Order of Battle): The forces which compose one side in any scenario as defined by the scenario card: O11.2, P8.2

OBA (Off-Board Artillery): C1.1

• [Cave NA unless it crosses the cave's CA hexside: G11.84]
• [Column: E11.533]
• [Dust: F11.791]
• [DYO: H1.5-H1.53]
• [DYO Chinese: G18.82]
• [DYO Japanese: G1.662]
• [ENEMY: S8.7]
• [FFE:1/2/C IR status is kept track only for Battery Access: E1.931]
• [Heavy Payload: C.7]
• [KGP: CG14]
• [LC: G12.63]
• [vs Mines: B28.61]
• [No Depletion Numbers: C8.9]
• [Observer End of Actions: C1.322]
• [RB: CG6]
• [Shellhole Creation: B2.1]
• [vs Wire: B26.52]

Objective Hex: P8.2

Observer (a Good Order leader with radio who directs OBA): C1.2, C1.6

• [Creeping Barrage: E12.77]
• [End of Actions: C1.322]
• [Observation Plane: E7.6]
• [OP Tank: H1.46-H1.465]

Obstacle: A6.2

OCEAN: G13.12

Offboard: Anything taking place outside the parameters of the scenario defined Mapboard Configuration

• [S? entry NA unless directed by MSR/RE: S3.322, S9.26]

Offboard Actions: A2.52

• [Movement DR NA until unit enters playing area: E1.531]
• [Starting MP Exclusion: D2.12]

Offboard Observer: C1.63

• [Heat Haze: F11.624]

Offboard Setup: A2.51

• [Starting MP Exclusion: D2.12]
• [in KGP terrain off the map is considered Open Ground, on the map use the terrain depicted: KGP SSR 6]

OG: (counter and chart abbreviation for Open Ground): B1

Olive Grove: F13.5

One Lane Bridge: B6.43-B6.431

One Man Turret (1MT): D1.322

• [OT: British Vehicle Note O. (includes German OT Vehicles)]

OP (Observation Post) Tanks: H1.46-H1.465

Open Ground (OG): B1

• [Dash: A4.63]
• [Defined for Rout & Interdiction: A10.531]
• [Desert: F1]
• [FFMO: any hex in which no positive TEM or LOS Hindrance applies: A4.6]
• [Mud: E3.65]
• [OVR DRM: D7.15]

Open Topped: see OT: D1.23

Opportunity Fire: A7.25, K14.11

• [Assault Fire NA: A7.36]
• [Berserk NA: A15.432]
• [instead of an ENEMY Move Command: S9.2]
• [Thrown DC: A23.62]

Optional Armament: H1.31, D1.84

• [DYO: H1.12, H1.41, CG8]
• [S? Activation: S5.713]

Optional Rules: A.4

• [Alpine Hills: B10.211]
• [Battlefield Integrity: A16]
• [Bombardment Shellhole/Fire Creation: C1.822]
• [Gyrostabilizer Use: D11.1]
• [PF Possession: C13.311]
• [Sz: D11.211]
• ["?": A12.16 & see footnote A18]

Orchard: B14, K5.4

• [LOS K9.22]

Orchard Road: B14.6

Ordnance (any weapon which must score a hit on a To Hit Table before rolling again on the IFT or To Kill Table to resolve that hit): C.2

• [Area Fire: C.4]
• [DYO: H1.3]
• [ENEMY Fire Action: S8.2]
• [Motion Fire: D2.42]
• [Non-qualified use: A21.13]
• [Residual FP: A8.25]
• [SW fire before Inherent FP: S8.22]
• [vs Unarmored Vehicle: D6.71]
• [Using IFE: C2.29]

Ordnance Listings: H

Ordnance Normal Range: A10.532

Original DR/dr (a DR/dr prior to any applicable modification by DRM/drm of any kind)

OT (Open Topped; AFV lacking full roof armor): D1.23

• [Airburst: B13.3]
• [BU Firing Restrictions: D5.3]
• [Crew Morale: D5.1]

Out-Of-Gas DR:

• [in KGP: KGP SSR 13]

Outside: Not in a building or pillbox Location: S5.761

Overcast: E3.5

• [Falling Snow: E3.71]
• ["Overcast" on NVR Table does not cause Overcast weather: E1.11]

Overland Movement (Boats): E5.2

Overlays: A2.7, F12, G.9A

• [Bedouin Camp: F12.45]
• [Desert: F.1D]
• [Escarpment: F12.5]
• [Mapboard Selection and Features: S13.24]
• [Mausoleum: F12.44]
• [Monastery: F12.43]
• [PTO Terrain: G.9]
• [Temple: G.9F]

Overstacking: A5

• [Concealment Loss: A12.14]
• [ENEMY: S6.223]
• [Entrenchment/Pillbox/Sewer NA: A5.6]
• [Location: S6.307]
• [Prisoners: A20.51]
• [Prohibited Location: S9.26]
• [Rout: A10.51]

OVR (Overrun): D7

• [Armor Leader: D3.44]
• [BU CT AFV: D5.2]
• [Buildings/Cellars: B23.41]
• [Concealed Units: A12.41]
• [Convoy NA: E11.2]
• [Crest: B20.92]
• [Dozer: G15.26]
• [Huts: G5.42]
• [Japanese are exempt for NTC: G1.62]
• [LC NA: G12.612]
• [Lumberyard NA: B23.211]
• [Motorcycles: D15.43]
• [Random SW Destruction: A9.74]
• [TB non-factor: B13.4212]
• [Unloading: D6.5]
• [Woods-Road: B13.32]

OVR Prevention: C5.64

• [Japanese: G1.13]