Blood policies and Shunning
Those who unrepentantly take blood transfusions will be disfellowshipped and shunned and God will have to destroy them at Armageddon.
But if they took blood repeatedly prior to 1945 and even administered transfusions while doing alternative service for the Red Cross during WWI they would not have forfeited their right to survive Armageddon.
Sometimes it's best not to catch up to Jehovah's chariot too quickly.