Question

Similarities between napoleon and hitler's invasion of russia

Answer 1

Yo!
I hope that this is the answer you want-

In both cases the transport can run into ambushes from partisans, be delayed by lack/damage of roads or presence of natural obstacles and so limit the operative capability of your frontline troops.
Also, Russia is famous for its most formidable general...General Winter!

This means that Russian soldiers know and use the winter cold to their advantage while French or German see it as a terrible enemy because of their lack of warm clothes and cold resistant hardware (the lubricant oil of the German tanks froze solid so that they became useless in battle!).

Both Napoleonic and German invasion forces disregarded the 2 more basic variables of the battlefield: distance and climate!