Complex sentence: This should have amounted to at least one-hundred-and-twenty M13s but 82 tanks had just arrived at Benghazi and required ten days of "acclimazation" prior to operation.
Split into simpler sentences: This should have amounted to at least one-hundred-and-twenty M13s. But eighty-two tanks had just arrived at Benghazi and required ten days of "acclimazation" prior to operation.