Added after 12 minutes
Yes, regarding the troops of my main hero - Vitya the machine gunner. The monthly increase of Adepts is 7, plus 20 from training, which means 108 per month. Multiplying by 5 gives 540 (I had 541). I practically didn't lose any Adepts or Archers. As for Archangels and Paladins, their losses were minimal, maybe about five of the former and fifteen of the latter. So, it's unclear where the author gets the figure of "100-200 units" and generally concludes that my hero's army was small after 5 months of gameplay.