Posted by Bob Norling on November 3, 2010, 10:38 pm, in reply to ""To-Block""
Sorry not to have reacted to this sooner. But I learned at signal school in 1942 it was "two-block," not "to-block." Any old Flags around to agree or disagree on this? It's what I learned at Butler University and also at Noroton Heights enroute to Armed Guard Atlantic in Brooklyn.