BAGHDAD — Patrolling the streets of the Iraqi capital is common to just about any cavalry squadron, infantry battalion, troop or company. Now add in regular rotations through a Coalition outpost, where you live next door to the local populous, and you have what many leaders call a "projection of force" to deter would-be terrorists from inhabiting quiet neighborhoods. Company I, 4th Squadron, 2nd Stryker Cavalry Regiment from Vilseck, Germany, is only about a month into their tour, but have already been tasked with running Combat Outpost "Remagen" and patrolling the streets of the Karkh District in central Baghdad. The...