score:9
No, this story is assuredly bogus.
First of all, there is no evidence that Jiang Baili graduated with the highest score. The Imperial Japanese Army Academy held two graduations in 1905: the 17th and 18th classes. See the following table of top graduates, between 1902 and 1907 for good measure.
- From left to right, the columns are: Class, Graduation Date, Number of Grates, Top Graduate, Number of Generals from the Class, and Names of Generals.
As you can see, the top graduating student from the 17th class was Shinoduka Yoshio 篠塚義男
, and from the 18th, Yasui Toushi 安井藤治
. Neither of them resemble Jiang Baili much. Even if we account for the possibility that the dating was off, he is simply nowhere to be found in either the preceding or subsequent years.
Since Jiang was apparently not the top graduate, the story that he received a sword for being the best pupil is clearly wrong.
That said, it is true that Imperial Japan honoured top graduates with royal gifts. However, such gifts were never exclusively swords. The Army War College used binoculars in its early years, for instance. Likewise, the Army Academy in fact awarded silver pocket watches.
【銀時計】東京帝国大学及び陸、海軍士官学校の卒業式で、天皇から優等生に賜る記念の銀側の時計。この慣行は一八九九年から一九一八年まで行われた。
Silver Pocket Watch A commemorative watch rewarded by the Emperor to top students in the graduation ceremonies of the Tokyo Imperial University and the Army and Navy Academies. In effect between 1899 and 1918.寺田近雄『明治・大正・昭和の新語・流行語辞』立風書房、平成4年
Note also that multiple graduates receives the gift in each year. The Army War College for example awarded the top six graduates of each class. Similarly, at the Army Academy,
例えば明治三十二年の十一月に士官学校を卒業した第十一期生から大正七年五月に卒業した第三十期生までを見ると、卒業者総数一万三三〇九名のうち、傻等卒業生、いわゆる恩賜組は一八五名、卒業者数の一.五パ—セントにすぎない。
For example, there is a total of 13,309 Army Academy graduates from the 11th class in November Meiji 32 up till the 30th class in May Taisho 7. Of these, the high achievers who received royal honours numbered 185 - less than 1.5%.三根生久大『陸軍參謀:エリート教育の功罪』文藝春秋、昭和63年
Thus while still rather exclusive, the royal gifts were by no means restricted to only the top student. Theoretically speaking, it is potentially possible that Jiang Baili received a gift for being one of the best (but not the best) students. However, that still does not square with the fact that the Army Academy gave out silver pocket watches, not swords as the story claims.
In conclusion, just about every relevant detail in the supposed event is contradicted by facts.