air cover
Noun
Meaning
the use of military aircraft to provide protection against attack by enemy aircraft during ground or naval operations
Source: WordNetSynonyms
Hypernyms
Examples
I'll be frank and say that we were deluded when we signed the contract [with the U. S. ]. We should have sought to buy other jet fighters like British, French and Russian to secure the air cover for our forces; if we had air cover we would have averted what had happened.
As a result of the loss of carrier-based air cover, Turner decided to withdraw his ships from Guadalcanal, even though less than half of the supplies and heavy equipment needed by the troops ashore had been unloaded.
Bereft of his carrier air cover, Turner decided to withdraw his remaining naval forces by the evening of 9 August and in so doing left the Marines ashore without much of the heavy equipment, provisions and troops still aboard the transports.
It was now clear that surface ships could not operate near enemy aircraft in daylight without air cover; most surface actions of 1942-43 were fought at night as a result.
Despite their rapid success, the Japanese proceeded methodically, never leaving their air cover and rapidly establishing new air bases as they advanced.
Despite a storm which scattered the convoy, the merchantmen reached the protection of land-based air cover, causing Dönitz to call off the attack.