Working together for Victory. Anthracite is a 'fighting fuel.' America needs it now" poster
The pattern
This still is filed under Us-versus-them positioning.
Define
The buyer is invited into a side. The product is what we use. The named other is what we refuse.
Mechanism
Identity contrast. Choosing the offer is choosing a group. The out-group does as much work as the claim.
Verdict
The category is crowded
Why it works
The poster visually equates the labor of coal mining with the combat role of a soldier, elevating the miner's status to that of a war hero. The large, split-color typography for 'VICTORY' underscores the unified national effort.
Steal this when
You need to motivate a workforce by connecting their daily labor to a larger, noble cause.