Napoléon did well....

 

....while he was close to France (and cheese was readily available).

 

 

But the Imperial Army suffered in Russia (as Alexander I
knew they would).
 
 
The 7th Polish Lancers and the Chasseurs-a-Cheval as Napoléon's escort (cheeseless).
Le Pas de Fromage
 
 
Which just goes to prove that Frenchmen lose wars when
they are deprived of cheese.
 
   
A lesson....