O'Neal rose through the ranks of the Marine Corps, including promotions to Drill Instructor, Senior Drill Instructor and Series Gunnery Sergeant.
What does SDI stand for?
SDI stands for Senior Drill Instructor
This definition appears frequently and is found in the following Acronym Finder categories:
- Military and Government
See other definitions of SDI
We have 334 other meanings of SDI in our Acronym Attic
- Scanned Document Image
- Science Data Interface
- Scottish Development International (Glasgow, Scotland)
- Scuba Diving International
- Secure Dial-in
- Securities Disclosure of Interests (ordinance; Hong Kong)
- Selective Description Item
- Selective Dissemination of Information
- Self Defense, Inc. (various organizations)
- Self-Descriptive Inventory (psychology)
Samples in periodicals archive:
[ILLUSTRATION OMITTED] "I was a senior drill instructor in the Army, and he talked worse than I ever talked to any of my trainees," Willis said, adding that the official yelled at and intimidated a pair of elderly women who appeared confused about where to go.
Lytle, senior drill instructor of Platoon 3110, India Company, 3rd Recruit Training Battalion, MCRD Parris Island.