From the Revolutionary War until WW2, a prominent way that the US government financed itself in major conflicts was war bonds. Appeals and advertising campaigns for these war bonds were a major effort and a major part of public life, and some of the most enduring propaganda images from those conflicts stem from war bonds advertising. And war bonds were equally ubiquitous in other major powers, like the UK or Germany, throughout this time period

But after WW2, to my knowledge the concept of "war bonds" - soliciting ordinary citizens to buy government bonds to fund the war effort - seems to have completely disappeared. Americans were not asked to buy war bonds to support Cold War rearmament or Vietnam. Citizens have been asked to provide charitable donations to soldiers serving in Afghanistan or Iraq, but we were not asked to buy US treasury bonds to finance those wars. I'm also not aware of this practice being used by other countries, even when facing a long and expensive war - to my knowledge North Vietnamese citizens were not asked to buy war bonds, nor were French citizens during Algeria, nor were the citizens of either Iraq or Iran during their war

Am I correct in my impression that public fundraising in the form of popularly subscribed war bonds has essentially disappeared? And if so, why is that?