The Ge 6/6^II was a six-axle electric locomotive of the metre-gauge Rhaetian Railway built for heavy express and freight service. Its six axles were split over three bogies and the body was split into two parts to allow running through tight curves. The two outer bogies and the traction motors were identical to those of the Ge 4/4^I. With an hourly output of 1,764 kW and a top speed of 80 km/h, it could haul 280 tonnes at 3.5 percent and 205 tonnes at 4.5 percent.

The first two were built in 1958, followed by five more in 1965. They got the numbers 701 to 707 and were named after towns and villages in the RhB network, with 701 being an exception carrying the name “Raetia”. The gangway doors on the front ends of the first two locomotives were welded shut in the late sixties. Their original green livery was changed to red starting in 1985. In 1998, they got single-arm pantographs.

For the first half of their career, they were used in express service on most of the RhB network with the exception of the Arosa and Bernina lines which were electrified with DC. With the introduction of the Ge 4/4^III in 1993, they came into freight service. All were retired in 2020 and 2021. Today, 702 is on display at the Swiss Museum of Transport in Lucerne. Four have been scrapped yet, with two waiting for preservation.