Oshkosh’s (NYSE: OSK) defense arm has secured $231.9 million in orders from the U.S. Army to produce modernized heavy tactical vehicles and supply related kits to the military branch. Oshkosh Defense said Monday it will provide new Heavy Expanded Mobility Tactical Truck or HEMTT A4 tankers, Palletized Load System A1s, cargos, wreckers, load handling systems