about 4 years
ago -
warthunder
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70 years ago, the T-54 (1949) first appeared. After 1,490 modifications during early production, the T-54 went on to become the most produced tank in military history. The 1949 remodel had reduced frontal hull armor but an improved turret that eliminated previous shot traps. http://pbs.twimg.com/media/Ekh5hVvW0AA9Uyt.jpg