Following from what Aubs said, why not go one better:
Code:

menu status {
  .$iif($group(#kick).status == on,$style(1)) War mode:{
    $iif($group(#kick).status == on,.disable,.enable)  #kick
    echo -a 10WARMODE: 14<<06#Kick14>> 04has now been $&
      turned $+(14<<,06,$iif($group(#kick).status == on,On,Off),14>>)
  }
}

This one just shows a checkmark beside War mode if it's turned on, and doesn't show the checkmark if it's not turned on; clicking it toggles it on or off.