Take for example two kibbutzim, situated 15 minutes apart: Ramat Rachel and Kfar Etzion. Both were founded in 1926. Both were attacked by the Arab Legion in 1967. The only difference is that Kfar Etzion succumbed to the attack, and Ramat Rachel managed to ward off the enemy until a cease-fire was declared. Kfar Etzion went from being "our land" to "occupied land" while Ramat Rachel is a legitimate kibbutz.
In the 1967 war, Kfar Etzion did not exist.
Both did exist, however, in 1947-48, when both were attacked. Kfar Etzion was destroyed.