Complex sentence: The first two books were also published as an omnibus "Warlord" (2003), which was reissued as "Hope Reborn" (Mar 2013), with the last three in another as "Conqueror" (2003).
Split into simpler sentences: The first two books were also published as an omnibus "Warlord" (2003), which was reissued as "Hope Reborn" (March 2013). The last three in another ombibus as "Conqueror" (2003).