The group launched at the Army Headquarters in Andover, Wiltshire in January, offering smoothies and ‘protein pots’ to 3,000 military and civilian personnel.
Sodexo says the site sold over 1,500 Crussh products in its first week.
A Crussh will open at a military site in High Wycombe later this year, and Sodexo has plans for more outlets in the pipeline.
In 2018 the two companies signed a deal to open at least 35 further Crussh units by 2023, targeting high-volume sites such as workplaces, universities and hospitals.
Crussh launched in London in 1998 and claims to be the capital’s first juice, smoothie and “healthy fast food” operator.
It now trades from around 35 sites in London and the south east, and introduced a retail range to around 300 Sainsbury's supermarkets in January.