(In World War 1)
How was this used? What issues did they address and what problems did it solve.
To bomb cities at night. Otherwise it didn't address issues or solve problems because they were mainly used to attack Britain. If anything they caused more problems and issues.
Did it have any peacetime application.
Britain used it to cross the Atlantic.
The Hindenburg was a German passenger ship that was heading to New Jersey to land. When about 200 feet above its landing zone it caught fire.
Fun Fact there is actually a mythbusters episode trying to make sense of the incident!