The federal definition of MI for PASRR is best understood in terms of the four âDâsâ: 1  A diagnosis or suspicion of a major mental illness such as schizophrenia, bipolar disorder, major depression, or an anxiety disorder such as OCD. 2  An absence of dementia. 3  A well-defined duration.  A particular level of disability.
Answer Wiki. The most produced tank in history is the Soviet T-54/55 Medium/Main Battle Tank. The estimations on the numbers built range from 86,000â100,000+ over the span of 1946â1983.
Replaced by the Patton series of tanks in the 1950s, the Sherman was heavily exported and continued to operate with many of the world's militaries into the 1970s. 1  World War II: Tiger Tank. 2  World War II: Curtiss P-40 Warhawk. 3  World War II: German Panther Tank. 4  Flawed Fighter: Bell P-39 Airacobra. 5  World War II: M26 Pershing.