To "deploy in France" does not equal "to arrive in France." Furthermore, Scheck specifically states that some were still in transit. U.S. troops currently en route to Iraq but not there yet are nonetheless deployed.
You might be confusing "deploy TO France" and "deploy IN France." How can soldiers be deployed in France if they were not already in France?
And it's quite possible that troops who had arrived by boat would take time to get to the boat.
But more to the point, Scheck gives us a figure of approx, 66,000 West African troops on the front lines defending France from Christian Nazi soldiers. Crowder gives a figure of 80,000 in France.