All the armies assigned to cross the Rhine had elements east of the river, including the Canadian 1st Army in the north, which sent a division through the British bridgehead at Rees, and the French 1st Army in the south, which on 31 March established its own bridgehead by assault crossings at Germersheim and Speyer, about 50 mi (80 km) south of Mainz.
Alle arméer som skulle krydse Rhinen havde enheder øst for floden, inklusiv den 1. canadiske armé mod nord, som sendte en division gennem det britiske brohoved ved Rees og 1. franske armé mod syd, som den 31. marts etablerede sit eget brohoved ved at angribe over floden ved Germersheim og Speyer, ca. 80 km syd for Mainz.