philadelphia-columbus

Updated: June 4, 2025

But you can only assure yourself of that fact by checking the map with the ground it represents. For instance, if you ascertain that the city of Philadelphia is due east of the city of Columbus, then the Philadelphia-Columbus line on the map is a due east-and-west line, and establishes at once all the other map directions.

United States. War Dept. - Manual for Noncommissioned Officers and Privates of Infantry of the Army of the United States, 1917 : To be used by Engineer companies (dismounted) and Coast Artillery companies for Infantry instruction and training