Book of the Guardian 3: The Last Mission

Read Book of the Guardian 3: The Last Mission Storyline:

When a member of John’s old unit, the Temporal Guard, dies, The Last Mission is the term used for when his team mates escort their ashes to their final destination. However, the term is also used for a mission where a Marine losses his life. With the Tammerain trying to engage them in war, John and his team must escort one of their own on his ‘Last Mission’ but will it be their last mission too?