This paper examines various schemes by which an intense pulsed ion beam can be injected into a tokamak. There are several schemes which appear to be viable just as the plasma is being formed, but which cannot work for a steady-state plasma. All schemes considered here use parallel injection. Once the beam is in the plasma, the heating and current maintenance are calculated. It is found that intense pulsed beams with reasonable energy should be capable of heating the plasma to breakeven and ignition.