rkr1958
Posts: 23483
Joined: 5/21/2009 Status: offline
|
quote:
ORIGINAL: tverse I noticed you use ground support more than ground strike in your offensive attacks. Do you have guidelines that you use to determine when one is better than the other? I haven't any explicit guidelines but I do go through some calculations to make a determination whether or not to use the air for ground strike or ground support. Let me illustrate with a few examples. (1) 4-3 infantry in clear terrain with fair weather and LND with 2 tactical factors. The probability of disorganizing that unit is 0.2. Specifically there's a 20% chance you'll get +2 and 80% you'll get nothing. Now if you use those 2 factors for ground support, you get (2/4) x 2 = +1 (guaranteed); so the choice is +2 w/20% chance or +1 w/100% chance. In this example I would go with the +1. (2) 7-4, 6-4 infantry & 3-2 artillery, with 2 LNDs w/4 & 3 tactical factors. Now it isn't so clear. For estimated effectiveness of a ground strike I first calculate p0, which I call the probability that any given unit is disorganized. For this example, p0 = 1 - (0.6 x 0.7) = 0.52. I then calculate the expected odds modifier for a ground strike, which is 0.52 x (+5) = +2.6. The +5 comes from +2 for each infantry corps and +1 for the division. In actuality, there's a 14% chance that both planes will not disorganized any unit, which means that there's a 86% chance they'll get at least +1. Now for ground support the odds modifier (again 100%) is (7/15) x 2 = +0.933. So, for ground strike the expected is +2.6, with an 84% you'll get at least +1, versus ground support which gives +0.933 at 100%. For this example I would choose ground strike. (3) Now my favorite, you have a 4-3 and 3-3 stacked together in a surprise impulse with two LND's and tactical factors of 4 and 3. For the surprise impulse, p0 = 1 - (0.6*0.6*0.7*0.7) = 0.8236. The expected yield from a ground strike is 0.8236 x (+4) = +3.29, with a 68% chance of getting +4, 29% of +2 ,3% of 0, seems like a no brainier doesn't it? However, if you use those same factors for ground support (during the surprise impulse in which they're doubled), the 100% guarantee odds modifier is ((7x2)/7) x 2 = +4. That is, 100% that you'll get the +4. So, ground support is the best option for this example. (4) Same example as (3) except the two units are in the mountains. The ground strike calculation remains the same; i.e., +3.29 expected, 68% +4, 29% +2 and 3% 0. However, because of the mountains the defense factors are doubled thus the ground support calculation is ((7x2)/(7x2)) x +2 = +2. For a ground strike with a 97% chance of getting +2 or higher and a 68% chance of getting a +4, I would go with the ground strike in this case. Hope these examples help. quote:
ORIGINAL: tverse Also your CRT calculator, I assume that is your own tool and not part of the game? I've attached it to this post and you're welcome to it. It's an excel spreadsheet.
Attachment (1)
_____________________________
Ronnie
|