Answer:
Explanation:
It is not a matter of "should" it is a matter of they "do."
During WWII people were given guidelines about what they could and could not say in letters written to loved ones in the service. To disobey those guidelines was an act of treason.
Our rights may have been bent a little, but nothing that truly inconvenienced us. It was better not to write much of anything than to spill what really mattered, and people had to learn what really did matter. There were so many Americans, Canadians and British involved in WWII, that learning the ins and outs of what could be said.