I want to know the answer to the following question:
What Hanoverian leader lost the Battle of Hastenbeck?
All the background I'm provided with is that "This problem was compounded when the main Hanoverian army under Cumberland was defeated at the Battle of Hastenbeck and forced to surrender entirely at the Convention of Klosterzeven following a French Invasion of Hanover.". Is that enough to answer the question?
Answer: yes