Origin of home base
An Americanism dating back to 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for home base
Hideyoshi had chosen Nagoya in the province of Hizen as the home-base of his operations.
When the pitcher lifted his arm Dreer dashed for home-base, and seemed beating the ball.The Young Pitcher
The lines from home-base to first, and from home to third are indefinitely prolonged and called foul-lines.