Analysis of information sources in references of the Wikipedia article "United States Army Command and General Staff College" in English language version.
(p.173): "As directed by the General of the Army, in communication of September 27, I have the honor to submit the annual report of proceedings and results at the United States infantry and cavalry school here located, or for the period from December 1, last, the date of its organization, to the present time.
The school was organized under the provisions of General Orders No. 42, War Department, of May 7, 1881, which provided that the commanding general of the Department of the Missouri should, as soon as the requisite number of companies could be assembled at Fort Leavenworth, take measures to establish a school for infantry and cavalry similar to that in operation at Fort Monroe for the artillery arm of the service."
(p.173): "As directed by the General of the Army, in communication of September 27, I have the honor to submit the annual report of proceedings and results at the United States infantry and cavalry school here located, or for the period from December 1, last, the date of its organization, to the present time.
The school was organized under the provisions of General Orders No. 42, War Department, of May 7, 1881, which provided that the commanding general of the Department of the Missouri should, as soon as the requisite number of companies could be assembled at Fort Leavenworth, take measures to establish a school for infantry and cavalry similar to that in operation at Fort Monroe for the artillery arm of the service."