William S. Rosecrans to Arthur O. C. Ducat, November 3, 1862

No. 3. Bowling Green, November 3, 1862.

There will be detailed immediately, from each company of every regiment of infantry in this army, 2 men, who shall be organized as a pioneer or engineer corps attached to its regiment. The 20 men will be selected with great care—half laborers and half mechanics.

The most intelligent and energetic lieutenant in the regiment, with the best knowledge of civil engineering, will be detailed to command, assisted by 2 non-commissioned officers. This officer shall be responsible for all equipage, and shail receipt accordingly.

Under certain circumstances, it may be necessary to mass this force. Whew: orders are given for such a movement, they must be promptly obeyed.

The wagon attached to the corps shall carry all the tools and the men’s camp equipage. The men shall carry their arms, ammunition, and clothing.

By command of Major-General Rosecrans: