History and deployment of smart weapons.In the United States, efforts to develop precision guided munitions—PGMs—began during the First World War and resulted in an 'aerial torpedo' by the 1920s. Wh
History and deployment of smart weapons.In the United States, efforts to develop precision guided munitions—PGMs—began during the First World War and resulted in an 'aerial torpedo' by the 1920s. Whil
