powerful presentment of this side of the case is to be found in
the following disposition by Yeh Shui-hsin: [17] --

It is stated in Ssu-ma Ch`ien's history that Sun Wu was
a native of the Ch`i State, and employed by Wu; and that in
the reign of Ho Lu he crushed Ch`u, entered Ying, and was a
great general. But in Tso's Commentary no Sun Wu appears at
all. It is true that Tso's Commentary need not contain
absolutely everything that other histories contain. But Tso
has not omitted to mention vulgar plebeians and hireling
ruffians such as Ying K`ao-shu, [18] Ts`ao Kuei, [19], Chu
Chih-wu and Chuan She-chu [20]. In the case of Sun Wu, whose
fame and achievements were so brilliant, the omission is much
more glaring. Again, details are given, in their due order,
about his contemporaries Wu Yuan and the Minister P`ei. [21]
Is it credible that Sun Wu alone should have been passed
over?
In point of literary style, Sun Tzu's work belongs to
the same school as KUAN TZU, [22] LIU T`AO, [23] and the YUEH
YU [24] and may have been the production of some private
scholar living towards the end of the "Spring and Autumn" or
the beginning of the "Warring States" period. [25] The story
that his precepts were actually applied by the Wu State, is
merely the outcome of big talk on the part of his followers.
From the flourishing period of the Chou dynasty [26]
down to the time of the "Spring and Autumn," all military
commanders were statesmen as well, and the class of
professional generals, for conducting external campaigns, did
not then exist. It was not until the period of the "Six
States" [27] that this custom changed. Now although Wu was