War is an art and as such is not susceptible of explanation by fixed formula
I never take counsel of my fears.
America loves a winner, and will not tolerate a loser, this is why America has never, and will never, lose a war.
When there is fear of failure, there will be failure.
Do not try to make circumstances fit your plans. Make plans that fit the circumstances.
The obvious thing for the cavalryman to do is to accept the fighting machine as a partner, and prepare to meet more fully the demands of future warfare.