Complex sentence: The first was the Advanced Tactical Missile launcher (ATM) that, depending on ammo, could either have a hitherto impossible reach on the battlefield or a heavy punch close up, with the third ammo type that was a cross between the two.
Split into simpler sentences: The first was the Advanced Tactical Missile launcher (ATM) that, depending on ammo, could either have a hitherto impossible reach on the battlefield or a heavy punch close up. With the third ammo type that was a cross between the two.