Note 103 — VII THE INVESTMENT OF BOSTON

The primary harbor defense batteries (12-inch, 10-inch and 8-inch guns and 12-inch mortars) are not emplaced for anything except sea-ward fire, nor should they be. To use them against land attack would be only a matter of desperation, as in the case here described. As a matter of fact, they would be rather inefficient against smaller guns that are more mobile and durable.