After the United States entered World War I, the squadron was ordered back to the United States.
It sailed from Manila on 15 October 1917, arriving in San Francisco on 17 November.
It was immediately transferred to Kelly Field, Texas, reaching the post on 22 November.
At Kelly, a number of men were transferred and sent to the new training airfields that were being established throughout the country, serving as trainers for new recruits and as experienced backbones.
Many of the men of the squadron were assigned to Call Field, Wichita Falls, Texas.
The remainder of the squadron was sent to Kelly Field #2, which meant that the squadron would be a training unit at Kelly (Kelly Field #1 was used for training personnel for overseas service).

At Field #2, the mechanics began assembling Curtiss JN-4D Trainers.
After a few months, the men had little time to worry about their assignment at Kelly Field when suddenly various squadrons began to be ordered for overseas duty in France.
The men of the squadron began to submit transfer requests to be included in these outgoing squadrons.
Some transfers were approved, however, most were retained at Kelly Field.
The 2d squadron was assigned to "Advanced Cross Country" and "Aerobatic" flight training.
The squadron was re-designated as Squadron "A", Kelly Field, on 1 July 1918.
At the end of the war, only six members of the squadron remained from the initial cadre that was formed up in San Diego in 1915.
The squadron was demobilized on 18 November 1918.
After the United States entered World War I, the squadron was ordered back to the United States. It sailed from Manila on 15 October 1917, arriving in San Francisco on 17 November. It was immediately transferred to Kelly Field, Texas, reaching the post on 22 November. At Kelly, a number of men were transferred and sent to the new training airfields that were being established throughout the country, serving as trainers for new recruits and as experienced backbones. Many of the men of the squadron were assigned to Call Field, Wichita Falls, Texas. The remainder of the squadron was sent to Kelly Field #2, which meant that the squadron would be a training unit at Kelly (Kelly Field #1 was used for training personnel for overseas service).
At Field #2, the mechanics began assembling Curtiss JN-4D Trainers. After a few months, the men had little time to worry about their assignment at Kelly Field when suddenly various squadrons began to be ordered for overseas duty in France. The men of the squadron began to submit transfer requests to be included in these outgoing squadrons. Some transfers were approved, however, most were retained at Kelly Field. The 2d squadron was assigned to "Advanced Cross Country" and "Aerobatic" flight training. The squadron was re-designated as Squadron "A", Kelly Field, on 1 July 1918. At the end of the war, only six members of the squadron remained from the initial cadre that was formed up in San Diego in 1915. The squadron was demobilized on 18 November 1918.
2nd Air Refueling Squadron