From DariaWiki

Military fanfics depict one or more Daria characters in a branch of the armed services. These can be post-canon, depicting a path characters take after Lawndale High; or alternate universe stories where the characters live in a real-world war or a Science Fiction conflict.

A few fanfics have depicted "Mad Dog" Morgendorffer's military service - notably "Chosin Fate" by Richard Lobinske, depicting him with PTSD - or Jake Morgendorffer's time at Buxton Ridge Military Academy, such as Kristen Bealer's "Shake, Shake, Quiver and Quake".

Examples of characters joining after school include:

Examples of alternate universes include: