Order of Battle Window

The OOB window displays a list of all units owned by the Side you are playing.

Units by Group

In the first tab displayed, all units are listed, and arranged by group. Each group is displayed in bold. This makes checking Airbases and task forces easy.

Units by Mission

In the second tab, units are listed if they belong to a Mission. They are grouped according to the mission they are assigned to. This makes checking mission status easy, although a better tool for that task is the Mission Editor