I am from Poland, I was talking with mother in law this weekend. She was born in 1935 in France. In 1939, right before the World War II they went back to Poland. I was shocked and asked why they did it, like weren't they aware that Germany can attack? She answered that they were guessing that it may happen but in case they wanted to be eventually on Polish side plus she said that brother of her father stayed in France and when Germany attacked France then he had to fight on first front. Is that true that France first used people from other countries to fight before starting to use French people?