After the war, most women who were working in the factories:

Give up some of the job positions that they have gained.  

Explanation:

Historically during war times women had to pitch in and support the efforts from home. They usually take jobs in factories and cut their expenditure as the military need the most of the country budget.  

Once the war was over some of the women lost their jobs as the returning men need to go back to their usual occupations.

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.