[Blade Raider]

Here's your W movie timeline:
Begins Night (Part of Movie War 2010) is set between episodes 14 and 15.
Forever A to Z is set between episodes 44 and 45.
Eternal Returns is set after the end of the show.
Message from Skull (Part of Movie War Core) is set after the end of the show.
Accel Returns is set after Message from Skull.

Begins Night and A to Z are part of the show's plot. Begins Night resolves a sub plot while A to Z introduces a concept used in the finale.