Try using this picture to make writing ideas.
It's in a French train station in 1956. So, that's 11 years after World War II ended. What was life like? What was travel like?
These children look quite well dressed - but perhaps that was normal in 'old fashioned times' . Even if you only had a few clothes, you took care of them and always looked smart in public.
Who are they? Brothers?
Where are they going?
Are they happy?
Who is with them?
What has happened (the day before, the week before, the year before?) What is going to happen tomorrow, next week, next year?