From the preview:
For today’s Lord of the Rings HeroClix: The Two Towers preview, we bring word from Lord Elrond of Rivendell. An alliance once existed between Elves and Men. Long ago they fought and died together. When Saruman’s forces marched upon Helm’s Deep, Haldir and a number of Galadhrim Elven Soldiers arrived to honor that allegiance and fight alongside men once again!