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During [[World War II]] Turing was assigned to the military code breaking unit at Bletchley Park.  Working on the decoding of the German's [[Enigma machine]] and, later, "Ultra" codes the group came to place increasing reliance on the formalization of computational procedures.  The combination of this formalization of the work they were doing and Turing's earlier concept of the Universal Turing Machine lead to his proposal of creating an actual, rather than theoretical, electronic Universal Turing Machine: the first electronic computer.  Turing and his colleagues played a significant role in the Allied victory in WW2, allowing Allied forces access to German communication networks throughout much of the war.  

During [[World War II]] Turing was assigned to the military code breaking unit at Bletchley Park.  Working on the decoding of the German's [[Enigma machine]] and, later, "Ultra" codes the group came to place increasing reliance on the formalization of computational procedures.  The combination of this formalization of the work they were doing and Turing's earlier concept of the Universal Turing Machine lead to his proposal of creating an actual, rather than theoretical, electronic Universal Turing Machine: the first electronic computer.  Turing and his colleagues played a significant role in the Allied victory in WW2, allowing Allied forces access to German communication networks throughout much of the war.  

In his 1950 paper "Computing Machinery and Intelligence" (Mind 49: 433-460) Turing proposed a test (apparently heavily influenced by Logical Positivism) for establishing whether a computer could think.

In his 1950 paper "Computing Machinery and Intelligence" (Mind 49: 433-460) Turing proposed a test (apparently heavily influenced by [[Logical Positivism]]) for establishing whether a computer could think.

His arrest in 1952 for [[homosexuality]] and the subsequent withdrawal of his security clearance may have contributed to his suicide by [[cyanide]] poisoning in 1954.<ref>http://www.turing.org.uk/turing/index.html</ref>

His arrest in 1952 for [[homosexuality]] and the subsequent withdrawal of his security clearance may have contributed to his suicide by [[cyanide]] poisoning in 1954.<ref>http://www.turing.org.uk/turing/index.html</ref>