Fe-rich, Fe-Ni-Co alloy nanowires fabricated by DC and pulse electrodeposition with nanoporous templates is presented, guided by experiments from thin film deposition. Applications of the nanowires include their use as electrocatalysts in water splitting, and as electrodes in microfluidic devices and sensors. Solid, tubular, and porous nanowires are observed under different deposition conditions. Both the morphology and the wire deposition rate are influenced not only by hydrogen gas generated from the side reaction occurring during deposition, but also from an interplay of adsorbed species at the electrode surface: adsorbed hydrogen, metal ion reaction intermediates and additives. Differences are probed by altering the electrolyte pH and concentration of additive sodium lauryl sulfate (SLS). For example, the growth of nanowires in alumina templates is insensitive to SLS concentration changes at a pH value of 2.0, but is a strong function of SLS concentration at a low pH of 0.5, attributed to larger surface coverage of SLS and metal intermediates at high pH, but larger surface coverage of adsorbed hydrogen at low pH.  To fabricate thin wires (< 50 nm), using commercially available templates having relatively large pores, a new methodology is reported combining a coupled displacement reaction with a more noble elemental ion, Cu(II), with a subsequent selective Cu etch. The displacement/dealloyed layer was sandwiched between two layers of Fe-Ni-Co to facilitate the characterization of the reaction front, or penetration length. The penetration length region was found to be a function of the ratio of proton and Cu(II) concentration, and a ratio of 0.5 was found to provide the largest penetration rate, and hence the larger thinned length of the nanowire. Altering the etching time affected the diameter of the thinned region. This methodology presents a new way to create thin nanowire segments connected to larger nanowire sections. In addition, Fe-Ni-Co nanotips at the end of nanowires are fabricated at the interface of two Fe-Ni-Co regions via a combination of pulse electrodeposition, anodization and chemical etching, without the use of a sacrificial material. The wires were fabricated with three, consecutive electrochemical conditions, where first an Fe-Ni-Co wire segment is deposited, followed by an anodic potential to induce growth of an iron oxide thin film, and then followed by an applied, pulse cathodic current density to reduce the oxide and deposit another layer of Fe-Ni-Co. Upon etching, tips formed at the end of the last Fe-Ni-Co region, as evidenced by SEM. Potential transients during the last applied cathodic pulse current step, suggests that both the reduction of the oxide and metal occur, and that TEM/SAED confirm changes in the crystalline Fe-Ni-Co structure at the interfacial region that contributes to the tip formation.  Positioning the nanowires into devices is not trivial, and the combination of electromagnetic alignment and topological pattern assisted alignment is demonstrated on microscale grooved surfaces formed by UV lithography. The accuracy of the alignment with Fe-Ni-Co nanowires is evaluated by measuring the deviation angle from the direction of the magnetic field line and a statistical alignment distribution reported for different nanowire lengths. Resistivity measurements of single nanowires are performed using a lithographically prepared two-point probe.