Yes Rosie was doing real good but all of a sudden she was busy with making babies. They had to go from a war economy to a peacetime economy and they had to salvage what they could from before the war began. I worked in a business that used a building that was actually a dance hall between the wars. Then after WW2 he bought the building and turned it into a lumber store because there was a housing boom. At first homes were selling for $8,000. The prices went up and when they reached $12,000 people quit buying and the boom came to an end. Those homes now are selling for over $100,000. They did not go in and tear it all down and built it all new the way they do nowadays. They went in and rebuilt and converted the buildings.
All of which is completely irrelevant to your statement that "WW2 Vets that rebuilt this country after the end of WW2".
Soldiers returning home to Germany, Japan, the Soviet Union, Poland, Italy, the Czech Republic and large parts of Asia and Europe, THEY
rebuilt their countries. Compared to those countries and their reconstruction, returning US servicemen did some light remodelling work.
The size of the US economy more than DOUBLED in real terms between 1939 and 1945. Unemployment fell from 8% to 2%. Wages increased 65% in nominal terms and 30% in real terms.
Returning soldiers came home to country that was wealthier, better educated, healthier, more productive and with a higher living standard and less economic inequality than the one that started the war. About the only negatives were that the tax base massively expanded (about a tenfold increase), inflation was appreciably higher than pre-war and consumer good production had been kept artificially low by the War Production Board (but still grew by nearly 90% between 1939 and 1945). Parts of the agricultural sectors in the South also suffered, and may have ended the war in a weaker position than when they started.
Reconversion from a war-time to a peace time economy happened relatively swiftly and painlessly between 1945 and 1947. Female participation in the workforce dropped from about 36% in 1944 to about 25% by 1947 - matching pre-war participation rates. By 1948, consumer spending on a per capita basis was better than twice what it had been a decade before.
WW2 economic history is a hobby of mine. I could do this all day.