Complex sentence: During his posting at Balaghat, He quit popular for large number of Naxal extremist were arrested by him due to which naxel movements were came under control effectively.
Split into simpler sentences: During his posting at Balaghat, He quite popular for anti Naxal operation. Under this operation a large number of Naxal extremist were arrested by him due to which naxel movements were came under control effectively.