Complex sentence: At 1050 the task unit came under a concentrated air attack; and, and during the 40-minute battle with enemy suicide planes, all escort carriers but "Fanshaw Bay" (CVE-70) were damaged.
Split into simpler sentences: At 1050 the task unit came under a concentrated air attack. During the 40-minute battle with enemy suicide planes, all escort carriers but "Fanshaw Bay" (CVE-70) were damaged.