They could get mad or confused it really depends on what the concerns are about the children
It moved military forces through a neutral country
house work should be your answer.
They were hoping that they would get freedom or at least gain some recognition and rights, which was something that they didn’t have, because a majority of them were enslaved and not treated equally.
During Hitlers 40th birthday a book burning was prepared in Molching of books written between World War 1 to rise of the Nazis. The Hubermann children Hans Junior a soldier and fanatic Nazi accused his father of being disloyal to Germany and asked why Liesel was not reading Hitler's book Mein Kampf. Hun then called his father a coward for doing nothing "a whole nation cleans out the garbage and keeps itself great''. He stormed out and Death explain how Hans Junior ended up at the battle of Stalingrad where Death was carrying the souls of dead soldiers.