Tl;dr: the goal of war bonds is to get you to stop spending your money at the store. /1
It doesn't really matter what form the savings take, whether you hold it in cash, or bonds, or whatever, what matters /5
They help with voluntary saving by making you feel like you contributed to the war effort. Buying a war bond lets me say "I've done my part!" This makes people /6
They can also serve an involuntary saving rule if they are structured so as to be difficult or costly to convert back to cash. For instance, if the bonds /7