Captains of bands - Principes latronum, captains of banditti, says the Vulgate; the Syriac is the same. Whether Ish-bosheth kept bands of marauders, whose business it was to make sudden incursions into the country places, and carry off grain, provisions, cattle, etc., we know not; but such persons would be well qualified for the bloody work in which these two men were afterwards employed.
Beeroth - See the marginal reference. From Joshua 9:17, it might have been expected that the population of Beeroth would be Canaanite. But from some unknown cause the Canaanite inhabitants of Beeroth had fled to Gittaim - perhaps the same as Gath - and continued there as sojourners. If this flight of the Beerothites took place at the time of Saul‘s cruel attack upon the Gibeonites 2 Samuel 21:1-2, Baanah and Reehab may have been native Beerothites, and have been instigated to murder the son of Saul by a desire to avenge the blood of their countrymen. The fact of their being reckoned as Benjamites is quite compatible with their being Canaanites by blood.