I want to know the answer to the following question:
Along with the 88, what other AAA battalion gun made a good anti-tank weapon?
All the background I'm provided with is that "Also available to the Americans at the start of the war was the 120 mm M1 gun stratosphere gun, which was the most powerful AA gun with an impressive 60,000 ft (18 km) altitude capability.". Is that enough to answer the question?