The War I Finally Won by Kimberly Brubaker Bradley
In this second book in the series, the girl has her club foot fixed. They also learn that their mother has died. They didn't like her, but feel said that she is gone. Other people are willing to take care of them. They end up with a well-to-do lady. A German Jew comes to live with them. They struggle with getting along with her. Is she a Spy? How can she get away with not believing in Jesus? World War II continues on and there are struggles with using rations and trying to enjoy things like Lamb. They see destroyed neighborhoods and hear about some of the bad things being done by the Germans. The afterward talks about code breakers, though this seems to be a tangential relationship. The discussions of Jews and religion seem to have a very modern tone to them, but does provide some insight into the issues with Jewish refugees.
Some kids grow up with a mean mother in England. During the bombings during World War II, the kids are evacuated to the country. They realize how unfairly they had been treated out there and also find that one kid's club foot can be treated. They become attached to their caretaker and consider the place "home". There are some fun war episodes, including spy catching. Later, their Mom comes to take them back. However, she rushed them away, so their caretaker comes to see them. They realize that they can live out in the country. However, they have managed to avoid getting bombed in both places.