I have always been a fan of the French 60s and 70s comedies, they clearly show the fact that loads of explicit violence and foul language are not necessary to make a movie "funny".
In my opinion, the adventures of the Seventh Company definitely belong to the best comedy films ever made, they are exactly that kind of movies that always cheers you up when you feel unhappy. I really cannot understand why the rating of this trilogy is so low, for the adventures of Chaudard, Pithivier and Tassin are witty, somewhat silly (and comedies should be somewhat silly, when you want to watch a dark piece - and to be honest, the comedies of nowadays are either dark pieces, or indecent trash films - you can always go and watch for example the Silence of the Lambs, or the Godfather - the great films of another, kind of "darkish" kind) and most enjoyable.
I have to emphasize the performances of Pierre Mondy, Jean Lefebvre and Henri Guybet (Aldo Maccione made a great Tassin (in the first part of trilogy) as well), have you ever seen any actors who were so natural when playing their parts? You can easily believe these actors were their characters!!!
It's a real must-see, a true gem among the comedies!