Campaign Variant
Version 1.2 
by Peter Phelps

1. Campaign starts 1D5+1 months after Jan 1942 and all subsequent
battles take place 1D5+1 months after the previous battle. 

2. The assumption is that the Battle of Midway did not occur - the IJN
concentrated all forces in the Southwest Pacific to knock out the route
to Australia and to force a decisive engagement in this region. Thus,
all IJN ships are available once they come on as per the availability
table and remain available unless sunk. 

3. Each battle is randomly rolled depending on time frame. If the IJN
has previously been successful in an invasion mission at Moresby,
Guadalcanal or New Hebridies then it is no longer a target. Example: if
you roll and get Guadalcanal as a target, and the IJN already holds it,
you reroll for a different target. To continue the example, if you roll
a major invasion for Guadalcanal and a minor for Hew Hebridies, treat
that as a major invasion for New Hebridies and no force for Guadalcanal.

4. The IJN scenario commitment die roll is modifed by the number of IJN
CVs available for action. 3-4, no change, 5 +1 to dr, 6 +2 to dr, 2 -1
to dr, 1 -2 to dr. 

5. Each airbase (PtM, Guad, NH) 'captured' by the IJN in a previous
scenario acts like another Rabaul (but at 50% of the Rabaul values), so
you can finally use those PtM and Guad chits. 

6. The retirement index is set at 1.5 - otherwise the IJN is
ahistorically tough in the face of damage. Also, add one point of
retirement for each transport sunk too. Example: Say the Japanese
Carrier strength rolled at the start of the scenario is 17. That means
the Japanese Retirement limit = 1.5*17 = 25.5 = 25 (rounded down). Thus
when the Retirement marker hits 25, start rolling for retirement. 

7. Campaign repairs: Damaged ships will not enter the game. Damaged IJN
ships repair one point of damage per month. The same rate of repair goes
for non-CV US ships. US CVs remove 1 light per month or 1 medium/heavy
per two months. US CV 'out of action' time is determined by the maximum
damage suffered by a CV in the scenario - ie. ignore running repairs
during the scenario. If the US has no undamaged CV available, it may put
to sea one (only) CV with light damage. 

8. Air Source: Ignore unrealistic movement restrictions for surface and
transport forces during night turns and have them move straight towards
the target hex. 

9. End of Campaign Game: When either (a) IJN has captured all 3
airbases; or (b) all IJN CV, CVL, CVE are sunk; or (c) 1943 and US has
taken the two invasion hexes. 

10. A base is captured if the IJN lands any number of troops there and
the Japanese do not have a General Fleet Retirement, ie. they have taken
the base and hold the field. 

11. Assume that Guadalcanal is back in American hands by August 1942 and
all three bases are back in American hands by January 1943. 

12. 'Time Extension' and 'Rabaul' rules are used in all battles of the
Campaign. 

(Thanks to Markus Stumpner and Tom Jensen for their ideas on improving
this variant)