In Western usage, the phrase post-war era (or postwar era) usually refers to the time since the end of World War II. More broadly, a post-war period (or postwar period) is the interval immediately following the end of a war.

What does postwar mean in history?

: occurring or existing after a war especially : occurring or existing after World War II.

What happened in the post-war period?

In the post-war years, couples that could not afford families during the Great Depression made up for lost time. The mood was now optimistic. Unemployment ended and the economy greatly expanded. Millions of veterans returned home and were forced to reintegrate into society.