Complex sentence: After having their heads shaved, they meet their Senior Drill Instructor, Gunnery Sergeant Hartman; who employs excessively aggressive tactics to turn the recruits into hardened, combat-ready Marines.
Split into simpler sentences: After having their heads shaved, they meet their Senior Drill Instructor, Gunnery Sergeant Hartman. Hartman employs excessively aggressive tactics to turn the recruits into hardened, combat-ready Marines.