I watched a tutorial by a youtuber named Strategy Gaming Dojo, and his multi video tutorials really helped me to understand overall tactics to use in the game to encircle units and get them to surrender. I was hesitant around the first few turns about whether I could pocket a lot of Red Army units, but I did around Lvov, Tarnopol, Zhitomir, and even Kiev. I managed to obliterate most of the Red Airforce on the first turn, so I didn't have to worry about them.
The first few turns I managed to pocket the soviets, so as I approach the final turn, they presented little resistance to me. I did let my panzers rest a turn or two, so I didn't deplete them of their oil.
One big thing I think I really could've done better was taking my time, and making sure that each army was not spread out, but together in a united front line, and I could've probably have moved up my Luftwaffe units later on in the game. I also did not use them to attack any cities like Poltava, Kharkov, Kiev, or Stalino, because I figured it only being 11 turns, the Soviets wouldn't be able to replace their units quickly.
I want to try "the road to Moscow" and "the road to Leningrad" again because I now feel more confident in my encirclements, and I think because I used only one panzer group instead of two like in the Moscow scenario, I understand that I don't need to use two panzer armies necessarily to create encirclements.
If you guys have any questions, critiques, or advice, I'd love it! I eventually want to play on hard mode, and if possible game with a player on here.
