Saying Goodbye, 1963
The North Yemen Civil War was fought from 1962 to 1970 between the Mutawakkilite Kingdom and supporters of the Yemen Arab Republic. This support included sending American soldiers and the photo shows them saying goodbye to their loved ones before leaving for Egypt in 1963.
On the royalist side were Saudi Arabia and Jordan who supplied military aid, while Britain gave covert support. The Republicans were supported by Egypt and were also given warplanes from the Soviet Union. In the end, the Republicans won the war.