Housewives, join the army of savers sign the following pledge .. : this is something you can do to help win the war ... sign to-day!
The pattern
This still is filed under Civilian war-duty equate.
Define
A civilian act (saving, making, staying quiet) is framed as the same duty as the front.
Mechanism
Moral equate. The small act inherits the gravity of the large one. The ask is ordinary. The meaning is not.
Verdict
We need mass compliance on an unglamorous behavior and can honestly tie it to a shared stake.
Why it works
The poster makes the act of saving food feel like an official military enlistment ('army of savers'). It provides the exact text of the pledge so the reader knows what they are committing to, reducing friction.
Steal this when
You want to formalize a behavioral change by asking for a public or official commitment.