to fight and defeat the enemy
Bombing the enemy troops.
'Ultra' was the code name applied to the 'product of the decryption of the more important enemy ciphers' during World War II. 'Enigma' is the name of one of the machines used by the Germans to encode their secret messages.
ASDIC
Nuclear weapons were used against the enemy.
Their language was indecipherable to the enemy
Propaganda was used to villianize the enemy, and to encourage the war effort.
Vasily Zaytsev
Propaganda posters have been used throughout history, but they were particularly prominent during times of war, such as World War I and World War II. They were used to promote patriotism, support for the war effort, and demonize the enemy.
The target will be more stable.
Trench warfare was mostly used, and planes were used to locate enemy positions
Germany