 During the Mandate era it built bridges, airfields, bases for the British Army and army projects in Iraq, Egypt, Bahrain and Cyprus.In 1926, Solel Boneh employed 3,000 workers in various public works projects, included 139 women who worked in construction.Solel Boneh helped strengthen the Israel Defense Forces during the 1948 Arab-Israeli War, and it built strongholds and systems to supply water, in practice becoming the basis of the first logistics unit in the IDF.