Sarah "I have a silly name" Crumpacker!

Congratulations Sarah, you win the contest and a brand new shiny paperclip. The rest of you shrewds need to step up the next time a contest comes around. Anyway, here's a list of the good entries I found, feel free to add more in the comments.

Going to war without France is like...

Boarding a submarine without a parachute;
taking a shower without the blow dryer;
going on your honeymoon without your mother-in-law
going into the ninth inning without your place-kicker
negotiating without Jimmy Carter
going to a restaurant without the condescending gender-disoriented maitre d'
not having to worry about the enemy doing an end-run around your eastern flank
a picnic without ants and flies
Texas barbecue without a croissant
flying without an anchor
going to hell and back without the flowery hand-basket;
Military History!
going to Tahiti without your snowshoes
driving cross-country without a 2-year-old with an overactive bladder

...and the winning entry:
Going to war without France is like going deer hunting without the accordian.