Changes

Originally raised from the [[Karachi Artillery Volunteers]] on the 1st of April 1902 before becoming the [[No. 4 (Karachi) Field Company]] on the 1st October 1920. Became the [[No. 4 (Karachi) Electrical and Mechanical Company]] on the 1st May 1925, then the [[No. 4 (Searchlight) Company]] on the 10th February 1928 before becoming No. 4 (Karachi) Fortress Company on the 1st April 1933.