Because it's a map of FRANCE?

Yes, exactly. This is what happens when a 80 millions citizens country (included dominions), disposing of the greatest colonial empire, decides to declare the war against Germany.

They send 10 divisions, and instead rely on their ally, letting him supporting 90% of the war burden, as Churchill sadly noticed.

BTW, how does it feel to see that even Belgium, a neutral country, disposed of an army 2.5 more important than your ?