Original sentence: In 1948 much of Berlin was still ruined after WW2, and the city was divided into four occupation zones, controlled by the USSR, France, the UK and the USA.The main tour season during and just after WW2 appears to have run from June to October - perhaps because the large troupe usually had to perform outdoors, to accommodate large audiences
Edited sentence: In 1948 much of Berlin was still ruined after World War II, and the city was divided into four occupation zones, controlled by the USSR, France, the UK and the USA.The main tour season during and just after World War II appears to have run from June to October - perhaps because the large troupe usually had to perform outdoors, to accommodate large audiences