Here are entered works on military bombardments by means of bombs dropped from the air. Works on sustained military attacks on cities, military positions, etc., with bombs, shells, rockets, or other explosive missiles are entered under Bombardment. Works on the use of explosive devices for the purposes of political terrorism, protest, etc., are entered under Bombings. --subdivision Aerial operations under individual wars, e.g. World War, 1939-1945--Aerial operations
Here are entered works limited to the aerial examination of enemy territory to obtain military information concerning installations, movements, resources, strength, etc. Works on military aerial observation in general, including aerial reconnaissance and surveillance, monitoring of friendly ground forces, observation of friendly artillery fire, etc., are entered under Aerial observation (Military science).
