It would have been nice to have unit fatigue and morale play a bigger role, instead of being presumably rolled into the Disruption rules. Overall, though, DF strikes a very nice balance between detail and playability. Command and control are not only present, but strongly emphasized. Units that are out of contact with their command structure are unable to coordinate assaults or receive artillery support. This often makes command status a decisive factor - a greatly superior force can be held off by just a few defenders if their lines of communication are disrupted.
Most battles involve one or more divisions and last for a few days of game time.
Night parachute drops are very chancy and often leave your troops scattered to hell and gone over the countryside. Amphibious operations are a little less iffy, but it's still sometimes difficult to coordinate an effective attack and get your men off the beach. Yes, at least for a while. The game system is straightforward and easy to manage. A nice selection of reports is available to help keep track of things like command and supply status, fortification levels, artillery range, and so on.