This is the campaign umpire's debriefing - by Peter Williams:
Thanks to Mark and Jim and Nick for putting in all the real
work. I had the fun of watching both armies blundering around in the dark and I
could make rulings about issues that cropped up, each of which I knew would
upset either the ANV or the AOP. I’m happy to be corrected in my opinions below
about why the generals did certain things. It was often a mystery to me.
Phase 1 from Day 1 to day 4
The opening three day turn, and the day after, went similar
to the real thing. The AOP, already deployed within a couple of hexes of
Washington, rested and saved force marches, then headed a bit north-west to
cover both Baltimore and Washington while their cav went out to find the ANV.
The ANV began mostly south of Frederick . It split, part
going to take Harpers and part heading north via Mechanicsville- a departure
from what General Lee did. In my view the first major error occurred here, when
the ANV cav div marched via Sharpsburg to attack Harpers. On the second attempt
Harpers fell, but the consequence was the ANV cav was unable to do its main
job-screen the army and go looking for the AOP so, for the rest of the campaign
the ANV was in the dark about the whereabouts of the AOP.
Phase 2 from day 5 to day 7
By day 5 the AOP knew where the ANV was, but not visa versa.
That day the ANV main body (apart from 4 div and the cav which together
captured Harpers) had a div at Cashtown, 2 more at Gettysburg and one at
Hannover. Apart from sending the Cashtown div to Gettysburg, there they stayed
resting until the beginning of their march on Baltimore on day 8.
In phase 2 the AOP was moving west through the mountains
with a view to taking Sharpsburg and Williamsport, thus denying the ANV a
Victory Point and, I think, assuming the ANV was about to come that way via
Waynesboro. This AOP advance caught up with the ANV’s 4th div, which
had participated in both Harpers battles. It was lucky to survive when the AOPs
2nd Corps caught up with it north of Sharpsburg on day 7. As a
result of the battle there ANV’s 4th div retreated, shattered, across
the Potomac at Williamsport and took no further part in the campaign. It had
with it the extra artillery ammo captured at Harpers; the ANV was short of arty
ammo and, had the battle at Baltimore gone all day that second decisive day,
day 12, then I expect the rebs would have run out of artillery rounds.
Phase 3 from day 8 to day 12
On day 8 the ANV main body commenced its march from Gettysburg
via Hannover to Baltimore. I’m not sure the ANV had intended this from the
start of the campaign. The AOP was in a tricky situation at this point. Having
committed corps west of the mountains to deny the ANV the victory point by
taking Sharpsburg and Williamsport, the AOP also felt it had to retain some troops
east of the mountains just in case of an advance on Washington and Baltimore. With hindsight a better move might have been
to advance against the ANV once, by day 6, they were sure it was in the
Gettysburg region.
As it happened, by the end of day 8 the ANV had advanced towards
Baltimore to 1410, two hexes east of Hannover, while the Union still had three
corps in the Sharpsburg - Williamsport region west of the mountains and another
three on the east side at Jefferson, Frederick and Ridgeville. Unfortunately
the two easternmost AOP corps, closest to Baltimore, were also the two worst.
The AOP had cav watching the head of the ANV column from
Hannover all the way to Baltimore, so on day 9 the AOP knew enough to respond
to the ANV’s march. The reason the ANV was unable to do anything about Union
cav watching it was its own cav were still coming in from Harpers by a
roundabout route, only rejoining the ANV main force on the first day of the
battle of Baltimore. Around this time the AOP requested extra troops from the
Washington garrison and, as this was what really happened in 1862 (but they
arrived just too late for the battle of Antietam) Lincoln released 4 C class
stands which I called 7th Union Corps. They fought at Baltimore.
On the approach to Baltimore both generals ran up against,
complained about, and had to work out how to make most effective use of the
road movement bonus rule- there are only so many corps (Union) or divisions (ANV)
that can get the road movement bonus on any day in any road hex. The ANV
solution was to rest alternate divs off road while others marched through,
which resulted in a slower advance than would have occurred if two roads were
used. The AOP solution was to use two roads out of Frederick, one to Elkridge
and the other to Westminster.
The battle which resulted at Baltimore on days 11 and 12
went the way it did, perhaps, because the AOP spent one day too long waiting to
be sure that the ANV advance was not a feint. The AOP was also preparing a trap
and at the end of day 12, the final day, they had a large force in the ANV
rear: their cav was at Cockeytown and they had an infantry corps each at
Manchester and Westminster. Had Baltimore held, or had the AOP response been
executed one day earlier, then the ANV, which was outnumbered by the AOP almost
2-1, would probably have been cornered and eliminated day 14 or 15 somewhere north-west
of Baltimore.
Summary
The AOP handled the campaign better for the first two of the
three phases, but not in the third phase, the march on Baltimore.
I’m surprised the ANV won as they misused their cav, so had
little idea of where the AOP was, other than having some indication that a lot
of it was, by day 7, west of the mountains. I think the ANV only came up with a
real plan on day 8, but they did manage to get to the decisive point firstest
with the mostest, and that is what counted in the end.