I was playing a PBEM with a friend and he quit in frustration because his Army was unable to leave a region where my forces were present.
A CSA Army under BGT and other really good leaders with a force of 15000 and very little cavalry located in Fairfax tried to advance north into Maryland under union MC and again northwest to Leesburg nominally under CSA MC but was crushed each time by my force. My force was led by McDowell with below average leaders about 36000 troops and double the cavalry in a defenseive posture.
We re ran the turn a couple of times and he varied the postures offence and defense. Each time he was engaged by my force and defeated.
I think it is because I had a much larger force and more cavalry but I’m not sure. Can anybody explain the factors the effect a forces ability to leave a region in the presence of another enemy force?