(W) Andy Diggle (A) Whilce Portacio, Richard Friend (CA) Whilce Portacio. Written by Andy Diggle Art and cover by Whilce Portacio & Richard Friend Part 4 of the 6-part "Rules of Engagement." Lex Luthor has supplied his prototype G.I. Robot to the military and only Batman knows there's a viper in the Pentagon's nest. But Lex Luthor knows as well* and attacks Batman in the Batcave to prevent being exposed! On sale March 14 * 32 pg* FC* $2.99 US