Supersymmetry and dual string solitons

We present new classes of string-like soliton solutions in (N = 1; D = 10), (N = 2; D = 6) and (N = 4; D = 4) heterotic string theory. Connections are made between the solution-generating subgroup of the T-duality group of the compactification and the number of spacetime supersymmetries broken. Analogous solutions are also noted in (N = 1,2; D = 4) compactifications, where a different form of supersymmetry breaking arises.