Characterization of translation planes by orbit lengths ii. even order

The translation planes of even order q(2) that admit a collineation group with point orbits at infinity of lengths q + 1 and q(2) - q are classified as either Desarguesian or Hall. Furthermore, the translation planes with spreads in PG(3, q), for q even, admitting a linear collineation group with one point orbit at infinity of length q + 1 and i point orbits at infinity of lengths (q(2) - q)/i for i = 1, 2 are classified as either Desarguesian, Hall, or Ott-Schaeffer.