Consider the following premises. For all z, if z reads a book, then z is a soldier. For all z, if z takes a plane, then z is reading a book. For all z, if z were a soldier, then z is taking a plane. Can we infer the following from them? There is at least one z for which the fact that z were a soldier does not imply that z is taking a plane.
 From the fact that for all z, if z takes a plane, then z is reading a book, and that for all z, if z reads a book, then z is a soldier we can infer that for all z, if z takes a plane, then z is a soldier. From the fact that for all z, if z were a soldier, then z is taking a plane, and that for all z, if z takes a plane, then z is a soldier we can infer that for all z, z is a soldier if and only if z will take a plane. Finally, from the fact that for all z, z is a soldier if and only if z will take a plane we can infer that for all z, if z were a soldier, then z is taking a plane, which contradicts that There is at least one z for which the fact that z were a soldier does not imply that z is taking a plane. Therefore, the answer is no.