1.1 OBA represents a battery of Guns outside the area represented by the mapboard, using radio-directed Indirect Fire to fire HE or SMOKE (or IR; E1.93) onto designated areas of the mapboard. OBA availability is usually symbolized by the presence of a radio counter in the scenario OB and is further defined by SSR or DYO purchase as to type. Each radio in the OB represents one predesignated available OBA battery (aka module). Each battery may produce a variable number of Fire Missions, but only via the one radio representing it in the scenario. If that radio is lost, so is the opportunity to contact that battery; another radio may not be used to call in the remaining Fire Missions of that battery.
1.2 RADIO CONTACT ATTEMPT: OBA may be called-for/
EX: The Russian Contact value of 6/
1.21 BATTERY ACCESS: Having established or maintained Radio Contact, the player must then immediately attempt to gain Battery Access if that battery currently has no SR/
1.211 DRAW PILE: Each battery's Draw Pile is assembled prior to setup, and comprises a number of black and red chits or playing cards (hereafter referred to collectively as chits) as listed in the form "#B/#R" in that nationality's "OBA ACCESS" column of the A./G. National Capabilities Chart on the Chapter A divider. (OBA chits are the reverse side of certain DM counters.) Each Draw Pile can be increased at this time by one or more of the following, as applicable: one extra black chit if the battery has been assigned ≥ one Pre-Registered hex (1.73); one extra black chit if it is specified as having Plentiful Ammunition; one extra red chit if it has Scarce Ammunition. The Draw Pile is then "shuffled" and set aside for use during play. Whenever Battery Access is lost or a new chit draw is made, the previously drawn chit is removed permanently from the Draw Pile [EXC: each extra chit drawn as per 1.21 is mixed back into the Pile immediately after being revealed]. Q&A
1.22 MAINTAINING RADIO CONTACT: To maintain Radio Contact from a preceding turn, the player must roll the Radio Contact value again in his next PFPh or DFPh (whichever comes first), but may deduct one from the DR [EXC: the Maintenance DRM is -2 if the battery is 70+mm/80+mm battalion mortar OBA2]. The Maintenance DR is the Observer's sole allowed action for that fire phase (other than further allowed radio activities). A radio is a 1PP SW. A leader must possess a radio to use it.3 A radio breaks down on any Original Contact or Maintenance DR of 12 (or as listed on the radio counter) and is subject to normal SW Repair (A9.72). The involuntary loss of Contact does not automatically cause loss of Battery Access, but failure to regain Contact in the next friendly PFPh/
1.23 FIELD PHONES: A Field Phone is equal to a radio in all respects, except that: Contact and Maintenance DR are passed by a DR of ≤ 11; unlike a radio, a Field Phone cannot be moved or repaired; a Field Phone can be eliminated by the presence of enemy troops or an HE FFE resolved within its Security Area. A Security Area is a prerecorded line of hexes with either the same vertical row letter or horizontal grid number from the Field Phone (inclusive) to its Friendly Board Edge. Anytime a FFE is resolved within that area resulting in an Original KIA DR, or the opposing player rolls an Original 2 DR for any purpose for one (or more) of his units in the Security Area, the line is considered cut and the Field Phone is removed. A Field Phone and its Observer may always set up using HIP (if otherwise able to). Q&A
EX: If a Field Phone is in hex 4E5 and its Friendly Board Edge is along the side whose hexes are numbered 10, its Security Area is Hex Grain E5-E10. If its Friendly Board Edge is along the side whose hexes are numbered 1, its Security Area is Hex Grain E5-E1. If its Friendly Board Edge is along the A hex row, its Security Area is E5-D5-C5-B5-A5.
1.3 ARTILLERY REQUEST (AR): Having established (or maintained) Radio Contact during that phase, and if he has Battery Access, the player may continue his radio action in that phase by placing an AR counter on any hex containing a Location that is in his Observer's LOS which he wishes to be the target of an OBA attack. LOS is then checked from the Observer to the AR's hex; if no such LOS exists to any non-Aerial Location therein, that AR is removed, that Observer's OBA actions are considered finished for the current phase, and at the opponent's option that current Fire Mission is Cancelled. If at this point the AR is not removed (as per either the preceding sentence or a 1.21 extra red chit draw), the player then makes an Accuracy dr to determine if his SR will land Accurately (i.e., in the AR's hex). If the player's nationality (and the time frame of the scenario if applicable) entitles his non-vehicular ordnance to use black To Hit Numbers, a Final Accuracy dr of 2 (see below and 1.62 for cumulative drm) results in the SR landing on target and the AR counter being exchanged for a red Spotting Round (SR) counter. A nationality whose non-vehicular ordnance can use only red To Hit Numbers must make a Final Accuracy dr of ≤ 1 to result in the SR landing on target [EXC: French (not Free French) and Japanese OBA, as well as any OBA directed by an Offboard Observer (1.63; E7.61), always needs a Final dr of ≤ 1; U.S. OBA always needs a Final dr of≤ 2]. An Accuracy dr made for a Corrected SR that is intended to be Converted to a FFE (1.332) receives a +1 drm if that SR was Corrected 7-12 hexes, or a +2 drm if it was Corrected 13-18 hexes. A SR has no detrimental effect on any unit or terrain. Q&A
1.31 DIRECTION/
1.32 BLAST HEIGHT/
1.321 OFFBOARD SR/
1.322 END OF ACTIONS: Placing a SR (1.3-.31), or Correcting one without predesignating its Conversion to a FFE (1.332), ends both that Observer's and that battery's OBA actions for that phase.
1.33 SR & FFE:1/2 OPTIONS: At the start of each friendly PFPh/
1.331 If he currently has a LOS to the SR's or FFE's Blast Height, he may Correct (1.4) that SR or FFE; or,
1.332 If he currently has a LOS to the SR's Blast Height, he may predesignate aloud that he will Correct that SR and then Convert it to a FFE:1; he then does so, but may Convert the now-Corrected SR only if he also meets the requirements of 1.333 at this time; or, Q&A
1.333 If he currently has a LOS to the Base Level of the SR's hex, or to its Blast Height and any non-Aerial Location in/
1.334 Disregarding SMOKE, if he currently has a LOS to the Base Level of the FFE counter's hex, or to the FFE's Blast Height and any non-Aerial Location in/
1.335 Disregarding SMOKE, if he currently has no LOS to the (SR's or FFE's Blast Height nor to any non-Aerial Location in/
1.336 He may voluntarily Cancel the SR, and may also attempt to place an AR (followed by a new SR) as per 1.3-.31; or, Q&A
1.337 He may voluntarily Cancel the FFE. See also 1.35.
1.34 FFE:C: A FFE:C (Continuation) counter is never Corrected, and is resolved only vs each unit that enters or becomes more vulnerable in a hex of its Blast Area (1.51). Its main purpose is to mark the position of the previous FFE:2 counter so that its Observer, after regaining Battery Access in the next PFPh/
1.341 He may replace the FFE:C counter with a SR, which he may also Correct (1.4) or leave in its present hex; or,
1.342 If he currently has a LOS to the Base Level of the FFE:C's hex, or to its Blast Height and any non-Aerial Location in/
1.343 He must remove the FFE:C counter, but may also attempt to place an AR (followed by a SR) as per 1.3-.31. Q&A
1.35 CANCELLED SR/
1.4 CORRECTING OBA: An Observer may Correct an existing SR up to 18, or an existing FFE counter up to 3, hexes from its current position by attempting (as per 1.3) to place an AR and make an Accuracy dr [EXC: the AR may not be placed in the SR/
EX: A SR is being voluntarily corrected four hexes to an AR but the Observer's LOS to the AR is Hindered by Dispersed smoke. There is no Accuracy dr because the +2 drm of the Dispersed smoke makes Accuracy impossible (1.62; A24.8). Even so the maximum Extent of Error will be two hexes: an Extent-of-Error dr of 1 will land the SR adjacent to the AR, while a dr of 2-6 will cause a two hex error.
1.5 FFE RESOLUTION: A new Fire Mission always begins with the FFE:1 side of the counter face-up. After resolution in that PFPh or DFPh it is replaced with that battery's FFE:2 counter, and after resolution in the next friendly PFPh/
1.51 ENTERING A FFE: A HE/
1.52 TEM: Indirect Fire IFT resolution is subject to TEM [EXC: Crest (B20.92), Deir (F4.5), Hillock (F6.5), and Dune Crest (F7.513) TEM] in the normal manner (see B9.31 and B9.34 for wall/
1.53 CH: A HE/
1.54 FRIENDLY UNITS: Each non-heroic, non-berserk unit [EXC: an Observer within that Blast Area due to his Accurate placement/
1.55 vs VEHICLE: The ★ Vehicle line of the IFT (A7.308) is used for an unarmored vehicle attacked by a HE FFE (or hit by HE using the Area Target Type; 3.33). However, such attacks vs an AFV are resolved in a different manner on the IFT: A Final KIA result destroys the AFV but allows normal Survival (D5.6; D6.9) possibilities [EXC: a Final DR ≤ half of the Final DR that corresponds to a K/# result on that IFT column results in a Burning Wreck (B25.14) and the elimination of its PRC (D5.6); no more vehicle counters can be affected than the highest KIA# of that IFT column (as given in A7.308)]; a Final DR that is a K/# or one > a K/# creates either an automatic (not a "possible") Shock for a turret hit, or Immobilization for a hull hit; a MC or PTC result has no effect vs the AFV, but can affect its Vulnerable PRC Collaterally. An AFV's vulnerability is not increased by its being Partially Armored (D1.22). Use OBA's original IFT DR vs an AFV to determine the hit location (C3.9) of that OBA attack. TEM applies to the IFT DR as per 1.52/3.331 as applicable (for an AFV hit by Air Bursts, see also D5.311). HD status (D4.2), HA (D4.22) and AF (D1.6) never apply to Indirect Fire. A FFE/
All AF ≤ 4 | -1 |
OT | -1 |
All AF ≥ 8 | +1 |
1.56 vs CONCEALED UNITS: The resolution of a FFE is not halved vs a concealed unit(s).
1.57 FFE LOS HINDRANCE: A HE Concentration (1.7) FFE of 70mm is considered a two level +1 LOS Hindrance to any LOS traced into, through, within, or from its Blast Area hex(es). This Hindrance DRM never exceeds +1, regardless of the number of HE Blast hexes it is traced through. For Barrage, see E12.52 and E12.75. See also F11.75. Q&A
1.6 OBSERVER: An Observer must have a LOS to the AR counter to call in OBA, so an Observer in an AFV [EXC: OP tank; H1.462-.465] must be CE to spot. Concealed units in non-Concealment Terrain and in the LOS of a Good Order Observer are always considered Known to that Observer [EXC: at night; vs Winter-Camouflaged unit], but only for his OBA actions. Such units would always be considered concealed for all other purposes. An Observer cannot be used in any other capacity to gain the benefit of "seeing through concealment". An Observer can operate only one radio per phase and therefore may not maintain Radio Contact with more than one battery at a time. An Observer who uses a radio (including any unsuccessful attempt to make or maintain Contact) may attempt no actions other than OBA direction during that PFPh (and may not move in the following MPh) or DFPh and if not hidden/
1.61 An Observer not in Good Order immediately loses Radio Contact. A different Observer or one restored to Good Order may use the radio again but must re-establish Radio Contact.
1.62 VISION EFFECTS: When placing/
EX: A German Observer for a 70+mm OBA battery is in 3W6, and Russian squads are in U3, U4, V3 and W4. In his Turn 2 PFPh the German makes a DR of ≤ 8 to establish Radio contact (1.2). He then draws a chit (1.21), which is black, thereby gaining Battery Access. Next he places an AR counter in U3 (1.3), which is in his LOS. No extra chit draw is required since he can see ≥ one non-hidden Known enemy ground unit in/
If the Russians in U3 and U4 were both under "?" and in Concealment Terrain, or were absent altogether, in order to leave the AR in U3 and attempt to place a SR on it the German would also have to draw an extra black chit (since there would be > one non-hidden enemy ground unit in/
In the Turn 2 German DFPh, the German maintains Contact with a Final DR of ≤ 9. Now, he would like to Convert his SR in W4 to a FFE and resolve it in that hex (1.333) where it would affect the Russians in V3 and W4. He cannot, however, because those Russians are not Known to him nor does he have a LOS to the Base Level of W4. Thus his only options are to Cancel (1.336) or Correct (1.331-.332) the SR. By Correcting it ≤ three hexes he is guaranteed to place it no farther than one hex off-target (1.4), so he decides to Correct it and Fire For Effect (1.332) with a HE Concentration. He declares this intention and places an AR in U4 (again requiring no extra chit draw) which is in his LOS. His Accuracy dr is > 2, and the Direction of Error roll is a 3, which moves the SR to V4 (and the AR is removed). Now, since he meets the requirements of 1.333, he must Convert it to a FFE:1 - but first he must check again to see if an extra chit draw is necessary as per 1.21. It is not, thanks to the Known (to him) Russian in U4, so he exchanges the SR for a FFE:1 counter which will now attack the Russians in U4, V3 and W4 (despite the latter two being out of his LOS) with 12 FP. He makes a separate IFT DR for each target hex, with a +2TEM for V3, a -1 TEM for W4, and a +1 TEM for U4 (U4-V4 wall; B9.34).
If the Russian in U4 were under a "?" and in Concealment Terrain, or were absent altogether, the German would have to draw an extra black chit before he could convert the SR.
1.63 OFFBOARD OBSERVER: A SSR may give a player an OBA module that uses an Offboard Observer. The SSR will specify a particular on-board hex and level (even though the listed hex may have no such level), and all OBA LOS checks are taken from this point as if the Observer were located there. Since there is no Observer actually in the designated Observer hex, any fire or movement into/
1.7 FIRE MlSSIONS: A Fire Mission consists of the entire time between Battery Access chit draws in which a FFE is on board. There are seven types of Fire Mission. The first is the HE Concentration and the second the SMOKE Concentration (1.71), the Blast Area for both of which is defined in 1.32. The other types are Harassing Fire (1.72), IR (E1.93), Barrage (E12.1), SMOKE Barrage (E12.51) and Creeping Barrage (E12.7). A Fire Mission cannot be of more than one type; e.g., if a battery uses a HE Concentration in its FFE:1 stage, it cannot switch to Harassing Fire or SMOKE, etc., in its FFE:2 stage. Whenever a FFE:1 appears onboard, the type of Fire Mission to be used must be announced immediately by its owner (before making any required Accuracy dr for it). [EXC: IR Missions must be declared prior to the Mission's first Battery Access draw]. Q&A
1.71 SMOKE: A SMOKE FFE is treated like an equivalent HE FFE except that it does not attack with HE, and in the PFPh and DFPh it places a SMOKE counter in each Blast Area hex. Normal SMOKE rules (3.76; 8.5-.6; A24.2-.8) apply [EXC: during the PFPh and DFPh, a WP FFE subjects all vulnerable units/
1.72 HARASSING FIRE: Whenever a FFE:1 that could be declared a HE Concentration appears onboard, its owner may announce it as Harassing Fire instead. The Blast Area of Harassing Fire comprises all onboard hexes within two hexes of the FFE counter, and its per-hex FP within that 19-hex Blast Area is 1/
1.73 PRE-REGISTERED FIRE: Pre-Registered Fire may be used only if allowed by SSR or DYO-purchase (H1.53), and only if that battery's Observer starts the game onboard or is an Offboard Observer (1.63; E7.6). Prior to the start of the opponent's setup, that Observer's owner may secretly record ≥ one (as determined by SSR or DYO-purchase) target hex as that battery's Pre-Registered hex(es). A battery with Pre-Registered Fire capability also receives an extra black chit in its Battery Access Draw Pile (1.211). If that Observer has both Battery Access and a LOS to any non-Aerial Location in a Pre-Registered hex of that battery, the following rules apply (Pre-Registered Fire has no additional effect): Q&A
1.731 After successfully placing the AR on that Pre-Registered hex, the player may dispense with the SR and instead immediately place a FFE:1 on that AR. He then rolls for Accuracy, etc. as per 1.732. Q&A
1.732 While the AR is in that Pre-Registered hex, Accuracy (1.3) occurs if the Original dr is ≤ 4; if not Accurate, the Extent of Error dr is halved (FRU). Q&A
1.733 Pre-Registered Fire may be used with any type of Fire Mission [EXC: only as per E12.71, for Creeping Barrage], but is always limited to the specific Observer and battery (not radio or field phone) that start the scenario with such capabilities.
1.8 BOMBARDMENT: The following rules, which may be invoked only via SSR or DYO-purchase, simulate the artillery softening-up process conducted prior to a set-piece attack.
1.81 AREA: Bombardment begins after setup but prior to the start of play. Bombardment potentially affects all the hexes of an entire mapboard (hexrows A-GG) or two adjacent half-boards (hexrows A-Q/Q-GG) at the firer's option, including all friendly units present in that designated area. The firer makes six dr, modifying the last three dr by +6. Each of these Final represents a numerical grid coordinate of the Bombardment area which is immune to its effects. Should any of these Final dr result in the same number or exceed 10, the total area spared the effects of the Bombardment is correspondingly less. A Final dr of 10 also spares all hexes of the Bombardment area that have a coordinate of 0 (see A2.2). For Deluxe ASL see J2.5. Q&A
EX: The German player is entitled to a pre-game Bombardment and rolls 3, 1, 3, 4 (+6 = 10), 5 (+6 = 11), and 2 (+6 = 8). All hexes of the Bombardment area with a numerical coordinate of 0, 1, 3, 8, and 10 are spared the effects of Bombardment.
1.82 EFFECTS: All non-Aerial Personnel units, and Vulnerable PRC, not in the spared hexes must take a 2MC prior to the start of play (thus passing the 2MC has no effect on HIP/"?" status). However, the TEM of their Location is added to their MC DR as a negative DRM (e.g., -4: entrenchment; +1: woods [Air Bursts]; -3: entrenchment in woods; 0: Open Ground). The +1 DRM for each non-rooftop level of a building above it (B23.32) does not apply. A -2 DRM applies if in Marsh. Otherwise, all rules for, and consequences of, a MC apply in the normal manner [EXC: each Personnel unit whose MC DR is Original Doubles < 12 suffers Casualty Reduction if it also fails that MC]; A10.31 applies to an Original 12. Hidden/
1.821 EQUIPMENT: Vehicles (and SW/
1.822 TERRAIN: Each building/
1.823 FIRE/
1.9 ROCKET OBA: Rocket OBA is available only to certain nationalities (see the DYO OBA Battery Availability Charts) and only by SSR or DYO purchase. No SR is placed nor is a FFE subject to Correction. Rocket OBA never receives more than one Fire Mission per battery. Rocketry is inaccurate and consequently never gets the benefit of an Accuracy dr; Error is automatic. After gaining Battery Access, the firer merely places his AR (1.21 applies), rolls for Error, and places his FFE. Rocket OBA has the same Blast Area as Harassing Fire but is resolved with full FP. Rocket OBA cannot use Harassing Fire, Barrage, IR or SMOKE. Q&A