The induced dipolar interactions of spherical colloids in an external AC electric field gives rise to an ordering transition in which two-dimensional crystals form. This order-disorder transition has numerous potential applications in photonic devices and sensors. In this work, we extend studies of the directed assembly of particles in external fields by investigating the order-disorder transition of anisotropic particles. The model system studied in this work consists of micrometer-sized spheroidal polystyrene particles of various aspect ratios dispersed at low ionic strengths in water. We observe the alignment of particles with the applied field direction at low field strengths. At higher field strengths and particle volume fractions, particles assemble to give long range order by forming chains, columns and anisotropic 2D crystals. Disordered vortices and bands, which occur due to electro-hydrodynamic flows between particles, are also observed at low frequencies and high field strengths. Finally, we observed that the order-disorder transition can be frustrated if the field strength is increased rapidly due to jamming of the random, isotropic structure, thereby undermining the development of crystals. This suggests that annealing techniques, such as pulsed fields and imposed strains, will become important in the directed assembly of anisotropic colloids for application in functional materials and devices.