Changes for DBM 3.1 [vs 3.0] (Version 20050729); created by Rich Crosby

Army Lists:

- Number of Bg determined by army AP, [was 2 Bg per command]
- Irr Ax(I) counts as 0.5 EE, [was 1 EE]

Terrain:

- Invader only has a 50% chance of placing a WW, [was 100%]
- Invader only has a 50% chance of placing a Rv, [was 100%]
- Invader can place 0 or 2-3 H(S), [was 0 or 2-4 H(S)]
- Defender-placed compulsory terrain now counts as half their actual size
towards the 2-3 FE total, [was free]
- Defender only has a 17% chance of placing a Rv, [was 100%]
- Defender only has a 33% chance of placing a BUA away from their rear
table edge, [was 100%]
- Invader can place 0-1.5 FE of any area features, [was 0-1 FE of gully,
boggy ground, H(G), or rough H(S)]
- Position of terrain in sector is 33% against edge/WW, 33% 100p-300p
from edge/WW, 33% more than 300p from edge/WW, [was 67% against edge/WW,
33% center a minimum distance away from edge/WW]
- For visibility purposes, elements in more than one type of terrain are
treated as in whichever is more visible [was ambiguous]
- O is now allowed on H(S), [was not allowed]
- WW maximum width is now random, [was fixed]
- Invader placed Rv position and width is now random, [was fixed]

Deployment:

- Bg is not counted for first deployed command size, [was counted]
- Commands must deploy in a rectangle parallel with table edges, [was not
required]
- Bg is now assigned to a command after deployment, [was assigned in the
army list]
- Bg must now be assigned to a single C-in-C/Sub-general's command, [was
ally-general could keep 2 Bg]

Movement:

- PIP penalty for Reg Kn after 2 marches, [was no limit]
- PIP penalty for Irr Kn in column after 2 marches, [was no limit]
- PIP penalty for Reg other than Kn after 3 marches, [was no limit]
- PIP penalty for skirmishers after 3 marches, [was no limit]
- PIP penalty for Irr in column other then Kn after 3 marches, [was no
limit]
- The free shift to line up with enemy can now be done to line up with
flank, [was front/rear only]
- Simultaneous moves are allowed if there is no other way possible to
make contact with enemy, [was not allowed]
- Only enitrely straight ahead moves cause single elements and
skirmishers to conform, [was any move that makes contact]
- Moves that end in contact with enemy are only allowed if the result is
a valid combat position, [was only front edge contacts were limited]
- Foot can march to 50p of skirmishers and single elements as long as the
width of the group in elements is more than the number of skirmishers/SE
closer than 200p and the move is entirely straight ahead, [was must stop
at 200p]
- Hd(I) can be interpenetrated in any direction but are immediately
destroyed, [was only Ps moving in the same or opposite direction, not
destroyed]
- Foot passed through by Cm(S) flee, [was recoil]
- Enemy ignore riderless mounts when moving (mounts are immediately
destroyed if touched by an enemy), [was something more complicated]

Shooting/Close Combat:

- DBE can make change when only one element is destroyed, [was both
elements always destroyed]
- Mitigating rear support (MRS) = -1 to enemy if enemy wins after
grading, [was not in 3.0]
- Only Ps need to pass through friends when recoiling, others can choose
to either pass through or push back friends, [was all must pass through
if possible]
- Pushed back elements pass through or push back friendly elements as if
they were recoiling, [was only push back]
- Pushed back elements are blocked from being pushed back by the same
conditions as a recoiling element and destroy/flee enemy elements in the
same way as a recoiling element, [was only recoiling elements
destroy/flee blocking enemy elements]
- A pushed back element that is not destroyed is moved back as far as the
obstruction preventing recoil, [was element stays in place or 
ambiguous]
- 2nd/3rd/4th rank elements also pursue if they are the same type or are
capable of ever giving rear support to the front rank element, [was only
ranks actually giving rear support pursue]

Shooting:

- Bw +3 when shooting or shot at by Bw, [was +2]
- Cv(O) and Cv(I) can get mitigating rear support against shooting except
Art, [was no rear support]
- Hd(I) stand against shooting, [was recoil]

Close Combat:

- Cv(S) no longer get rear support, [was rear support from Cv(O) vs Cv/LH
or rear support from Ps(S)/Ps(I) vs Cv/Kn(X)]
- Sp no longer get rear support vs El, [was +1 rear support allowed]
- Pk no longer get rear support vs El, [was up to +3 rear support
allowed]
- Pk(I), Pk(O), Pk(S) no longer get 4th rank +1 rear support, [was +1
rear support]
- 4th rank of Pk gives enemy foot -1 CF, [was +1 rear support vs all]
- Bd no longer get rear support vs Kn/Cm(S), [was +1 rear support]
- Wb(S), Wb(O) get rear support for 3rd/4th ranks vs mounted and can mix
ranks of Wb(S) and
Wb(O), [was only all Wb(S) gets support]
- Ps(I) no longer get rear support from Ps(O), [was +1 rear support vs
skirmishers]
- Ps(S) can get rear support from 2nd rank Ps(S) vs skirmishers, [was not
allowed]
- Demoralized Bw -2 when shooting without enemy reply, [was only -2 if
enemy shooting back]
- Wb(S), Wb(O) now only -1 in DGo/RGo vs foot, [was -2]
- Hd(I) now -2 in DGo/RGo/crossing non-paltry Rv, [was no effect]
- (F) grading now hurts in both bounds if enemy wins by 2 or more, [was
only in enemy bound if
enemy wins by 1 or more]
- Kn(X) are (O) vs Bd, [was (I)]
- Bd(X) are (S) vs Kn/Cm(S) to their front, [was (F)]
- Mandatory DBE Bd(X) are (O) vs everything except Kn/Cm(S), [was (F)]
- Cv(O)+Cv(O), Cv(I)+Cv(I) get MRS vs all except El/Art, [was +1 rear
support vs Cv/LH]
- Cv(O)/Cv(I)+Ps(S)/Ps(I) get MRS vs Cv/Kn(X), [was +1 rear support vs
Cv/Kn(X)]
- Ps-supported Sp/Pk/Bd/Ax get MRS vs Wb/mounted not Kn(X)/WWg/TF/PF,
[was +1 rear support vs Wb/mounted not Kn(X)/WWg/TF/PF]
- Bd(X) no longer quick kill Kn, [was QK vs Kn in own bound]
- Single-ranked Sp are quick killed by El, double ranked Sp recoil from
El, [was all Sp recoil]
- Single-ranked Pk are quick killed by El, double ranked Pk recoil from
El, [was all Pk recoil]
- Single-ranked Bd(S)/Bd(O)/Bd(X) quick killed by Kn/Cm(S), double
ranked
Bd(S)/Bd(O)/Bd(X) recoil from Kn/Cm(S), [was Bd always quick killed by
Kn/Cm(S)]
- Hd(I) are quick killed by everything, [was quick killed by
Kn/Cm(S)/Exp/El/Wb]
- Only Ps that give rear support are automatically destroyed, [was all
who give rear support are destroyed]
- Zone of death behind destroyed element is always 1 base depth (base
width if less), [was 1 base width if to flank/rear edge or rear corner]
- Hd(I) no longer has a zone of death, [was normal zone of death]
- A flanking element that is still in contact with the flank of rear rank
enemy elements after the front ranks are destroyed are shifted to legal
flank contact if there is room, [was element did not shift]
- New pressing forward rule - see the amendments

Obscure rules:

- Later Byzantine DBE are now Cv(O)/Cv(O), [was Cv(S)/Cv(O)]
- Elements moving forward in a less than 1 element wide gap must end in
contact with enemy, [was no restriction]
- Elements moving backwards in a less than 1 element wide gap must end
out of the gap and not in contact with enemy, [was no restriction]
- Inside corners of TF/PF cannot be less than 90 degrees or more than 270
degrees, [was no restriction]
- 10-0 scoring system modified to transfer 1 VP to side with the fewest
commands at >= 25% losses in the case of neither player losing any
commands, [was would remain 5-5]