Complex sentence: Besides, the officers distrusted their undisciplined troops and the men suspected them in return; out of 9,000 officers, at least half had already emigrated, and a few more deserted on the eve of the offensive.
Split into simpler sentences: Besides, the officers distrusted their undisciplined troops and the men suspected them in return. Out of 9,000 officers, at least half had already emigrated, and a few more deserted on the eve of the offensive.