Go Jager Inf Doc and get G43 and camo for your Grens, then they rape everything
Still going to lose against Soviet infantry.
Here's why: Jaeger infantry is munitions heavy. Every single G43 upgrade, costs 60 munitions. Yes, the G43's are VERY good and accurate even at long ranges, but I've noticed you need at least two squad with them to really supplement your flamethrowers or Pzgrens. Thats 120 munitions.
By the time you get your G43's (2CP's), a player using the doctrine with Hit the Dirt, has unlocked Hit the Dirt, Guards and PPSH's. He has, most likely, secured the early game with this fast advantage, and your infantry is lost.
If this argument is not enough, then this one should do the trick: If the soviets *force* you into going G43', simply because their vanilla infantry is superior, you are still at a disadvantage. Shock Troopers will still rape G43's, anyways.