  In this contribution the construction of the Wess-Zumino term for Dp-branes
and NS 5-branes invariant under T-duality is described. The cases of the
massless Type IIA/B and the massive Type IIA theories are covered. Mass
parameter is introduced by generalized Scherk-Schwarz ansatz of O(10,10) spinor
and tensor fields. The results lead to the picture where a given brane is
understood as an invariant object rotated into the full doubled space.
