Complex sentence: The Grumman OV-1 Mohawk is twin turboprop engined, side-by-side seating, heavily armored and armed military observation and attack aircraft designed for battlefield surveillance and light strike capabilities operating from short, unimproved runways in support of Army maneuver forces.
Split into simpler sentences: The Grumman OV-1 Mohawk was a heavily armored and armed military observation and attack aircraft, designed for battlefield surveillance and light strike capabilities. The Mohawk was intended to operate from short, unimproved runways in support of Army maneuver forces.