Sherman manufacture ceased after VJ day -- thus all Shermans, in that sense are WW2 era. That being said, what you have is the M4A3 (105) with HVSS -- which was manufactured in 1945. The M1A1 blade was also of that time period. It's theoretically possible that this combo occurred during WW2. However, I've never seen a photo of this combo during WW2.
Academy only gives you Korean war era decals. Many photos exist of the combination during that conflict