A holosuite recreation of the 1836 siege of the Alamo, replayed many times by Julian Bashir and Miles O'Brien during the last year of the Dominion War.
The Alamo programme lets its players join the Texan defenders in their doomed stand against the Mexican army. Bashir and O'Brien take it up in the seventh season of Deep Space Nine as the successor to earlier holosuite pastimes such as the Battle of Britain.
Its appeal to two men in the middle of a losing war is noticed by others. In Once More Unto the Breach they argue over the fate of Davy Crockett, and in The Changing Face of Evil O'Brien builds a detailed scale model of the mission, which occupies a table in Quark's and absorbs both of them.
In the finale What You Leave Behind, with O'Brien leaving for Earth, the two friends recall their battles there as they say goodbye.