"The Children's Crusade" is the overarching title of a seven-issue comic book crossover and limited series, and specifically the two bookends thereof. It was published in 1993 and 1994 by DC Comics as a part of the Vertigo imprint.[1]
The two bookends which open and close the crossover were written by Neil Gaiman and Alisa Kwitney, with the middle five issues being the newly created or resurrected Annuals from the then-on-going Vertigo titles (bar the Arcana Annual, which re-launched a new Books of Magic series). These were written by those titles' then-authors: Dick Foreman, Jamie Delano, Nancy Collins, Rachel Pollack and John Ney Rieber, respectively.
This storyline marked the first attempt by the then-brand-new Vertigo comic line to do a crossover within its titles. Its relative lack of success, and the subsequent retooling of the Vertigo imprint to feature comics that do not tend to share a universe, make it unlikely to be repeated in such a manner.