Can you check your previous command dials before selecting a new one? I.e look at your facedown dials before choosing a new one or are you expected to remember what previous commands you issue?
Command dials question
Page 3 of the rules reference.
A player can look at his ships’ facedown command dials
at any time. When a player looks at a ship’s command
dials, he must preserve the order in which the command
dials are stacked.