Complex sentence: The 14th and 28th Bomb Squadrons The 28th Bomb Squadron had been a longtime part of the 4th Composite Group, which was disbanded on 16 November 1941, and formally assigned to the 19th BG on that date.
Split into simpler sentences: The 14th and 28th Bomb Squadrons The 28th Bomb Squadron had been a longtime part of the 4th Composite Group, which was disbanded on 16 November 1941. The squadron was formally assigned to the 19th BG on that date.