Here is the introduction from the document: The reference data contained herein are based upon the organization of TD Units as set forth below. Since Tables of Organization and Tables of Equipment are subject to change, and strength and composition of units in the field forces will vary, these data are issued to students of the TD School for use in the solution of school problems only. TD units in the field forces should consider these data only as a guide in the preparation of their own data. Document was provided courtesy of the Tank Destroyer Association.
TD Reference Data, Tank Destroyer School, Dept of Tactics – May 1943 (TDS-111)